That was a interesting read, I just find that if someone is looking for biodiversity you may need to accept that you will encounter many different life forms that are part of a larger ecosystem, if someone isn’t ready to accept that maybe Live rock and wild corals should be taken out the equation. The vermitid snail is probably one of the easiest to deal with and it’s only a issue for people that broadcast feed zooplankton and other small foods. There is also a variety of predators that can be added in aquaria to keep they’re numbers under control. If someone wishes to go far in the hobby it needs to learn how to deal with simple things like this, they will eventually find a way in.