Yeah, a decade and a bit ago one could share a bit of knowledge on wikipedia fairly informally and be sure it would feed into the article and help the project.
Fast forward to recent years and you can write a decent article with references and have someone come along from one of the 'patrol' teams and nominate it for swift deletion in under 5 minutes, regardless of whether they know anything about the subject area.
New users are unlikely to try twice, when the initial reaction is so hostile.
FWIW wikipedia seems to be aware that those patrol teams are more harmful than useful.
Vandal Patrol got shut down; new page patrol is now a user right and it's getting a lot more scrutiny and discussion - and the discussion is all focused on preventing the newbie-biting harms. Twinkle and rollback got a lot of scrutiny.
I hate wikipedia, but I'm glad to see some movement in the right direction.
Fast forward to recent years and you can write a decent article with references and have someone come along from one of the 'patrol' teams and nominate it for swift deletion in under 5 minutes, regardless of whether they know anything about the subject area.
New users are unlikely to try twice, when the initial reaction is so hostile.