While I think I know some people who'd take it as trampling on their toes for the reasons you mentioned, I for one would absolutely overjoyed if someone was willing to help with such things—though obviously I have my opinions about them too!

Triaging issues especially can be a big time-sink, and is something that is relatively easy.

How do you tell who you'd be trampling on it and who else would be shouting "YES!" excitedly? I'd just drop an email!