Yeah, especially accessibility-related data (especially especially crosswalk info) is apparently sorely lacking in OSM, given that every time I fire up StreetComplete in a new place the vast majority of the questions are things like “Do both ends of this crosswalk have tactile paving?” or “Does this crosswalk have an island?”.
Indeed. I have been slowly but surely completing a11y info in my area for a while. It seems never ending, but it's a good excuse to go take some long walks outside. Hopefully the data is useful to someone in need too :)