It is O. scyllarus.
For both tank glass breaking and injury; its both overexaggerated and also underexaggerated.
Tank breaking is a genuine concern and has happened numerous times, its not something you catch on film on a whim as its overexaggerated they can just break out on demand, but rather its something that occurs under a couple conditions or over a long stretch of time. Infact part of the way mantis shrimp got kickstarted in popularity was because during an interview with roy caldwell, a marine biologist well known for stomatopods and cephalopods, completely off subject matter the interviewers got their attention drawn to stomatopods when one literally broke out unexpected during the interview in the room next door. The complete and utter shock of that event led to that knowledge of them being able to break out of aquariums more famous. When it happens normally, its because they tend to chip glass burrowing
downwards since they can't distinguish rock from glass and just chip away for hours without end, this is solved via just laying acrylic/pexiglass on the bottom and calling it a day. The only time they ever break out the sides is if you very poorly setup their burrow against the glass where the glass itself is supposed to serve as part of the burrow's wall, in which expansion could hypothetically cause it. Typically though its the chemistry of Big mantis + thin glass + aged tank, however there are edge cases (I've had 3 N. wenneraes do break outs in very small setups when attempting to keep them in isolated containers in larger tanks, just does not work with kritter carries and my LFS later figured that out and that's how I ended up with one of them and they don't carry mantis shrimp regularly anymore.). You will never achieve setting up an aquarium with a mantis waving your finger on the glass and getting it to break on film, even your presence alone would ruin the conditions of them burrowing as they'll focus on you.
The injury aspect is overexaggerated in the sense of what they
usually do and highly underexaggerated in what they
can do. Frankly there's rarely an inbetween, you're either not experiencing a thing and its all placebo or you're in stitches potentially getting an amputation in extreme cases. Its not as simple as "break a finger" cause they're not particularly capable of that, they will break skin especially around joints and obviously if they hit a nerve its going to really sting, but generally mantis shrimp aren't as sadistic as they're made out to be and will just observe your actions and only give you a warning hit if you disrespect their personal space. They know better than to actually fight a predator that isn't picking a fight to begin with cause thats just more risk to them either from injuries or getting stuck in their predator.... and that's where things get
very scary. Whats underexaggerated is
all, not some, ALL, stomatopods have spearing capabilities, we know them for their loud cracking and punching, but their clubs actually split just like your typical spearer and within it is a serrated dagger
and it is not meant to come out. If that gets stuck in you, frankly there isn't an ideal result, it will either be literally stuck in you and need surgically removed, or it will cause such a deep cut that you need stitches and you run a major infection risk (one individual who attempting to hold an O. scyllarus, after being warned not to, got impaled by it and lost a portion of their hand because the anti-biotics weren't working for the deep infection). Never attempt to hold, handfeed, or dare devil test their capabilities because even if the standard is overexaggerated, this is a really bad possibility that outweighs it all. You can also cut yourself just from their shells, especially the outter parts of their tails as they're extremely sharp and if they do a swift roll it'd be like a knife blade.
In 12 years of keeping, I've only been warning struck once. I got cut from the rim of the tank from the placebo effect of 'being hit', but all the close calls I had cleaning glass, the closest being when one blind spotted me and grabbed my hand with its little maxillipeds (their 6 "hands") and even that didn't result in any aggression. Just know when to back away if they seem a little too curious about your presence and don't even come close if they show defensive or aggressive signs in the slightest. I've had more painful injuries (overexaggerating play bites and scratches) playing with ferrets at pet stores in the past month than 12 years of mantis shrimp keeping.
If the OP has an O. scyllarus, I wouldn't mess with it lol! 
