Absolutely not related to tank age.
I could generate gha in the most perfect tank on this forum with the best algae scrubber if I just shine my old 6500 k metal halide planted tank bulb right down low on the display
Every tank has the potentiation for gha depending on conditions... It's just new tanks typically don't have the balances in place that large tanks do to keep it at bay
Gha should be hand removed at any stage it's seen, new or old, for pure control over the scape where nothing can take over
Many choose to let it subside naturally but many of those tanks get really bad. No tank gets bad if it's simply not allowed. It's a matter of chances taken.