Is static electricity any danger?

static is a weird unpredictable thing, though in general you can charge 30KV and things work fine ... its when you discharge is when the stuff hits the fan (as little as a single KV depending on variables).

you are asking for trouble, but will it bite you? I dunno

I have spent 3 weeks making large chats, zapping crap with an ESD gun, its highly varible, but I would not choose to invite it. TVS's on everything gets expensive, offering grounds near inputs is effective, there is a balance