I think the element that annoys me most about it is the Village parks at least are pretty aggressive about putting closures on the website even if it's only for a day. DW might well be like this too but I don't follow their maintenance page, and people don't seem as focused on what they do day to day. The culture seems to be 'If there's any doubt, list it as closed, we don't want to over promise and under deliver'. Far more often than not, those rides reopen, but they're being conservative so they dont dissapoint their guests, which is totally the best way to do it.
When people repost it on here, often with no follow up it creates a negative perception for the parks, and creates a disincentive for the park to do the right thing by the normal guest. I think the conservative attitude is the way to go, and I think reposting that stuff here creates a perception which is untrue and harmful. Also as noted earlier, being happy to have a ride closed rather than being unsafe is obviously not a bad thing either.