Firmly agree. If I notice a trend on posts being deleted after posting, I just block the user so I don’t see the new posts. Nothing is more annoying then putting a bunch of effort responding to someones question, especially tech related, just for them to nuke the post later on so it was all for nothing.
Thankfully though, it’s few and far between on the communities that I usually look at, so I have not noticed it a whole lot.
as others have said, generally a privacy issue type deal. Sometimes regarding data being collected then sold.
I don’t agree with the mentality tbh, if you were concerned about that just don’t post. Nothing is stopping the data collectors from collecting it anyway(I’m sure they already have their own instance set to auto sub and ignore deletion requests), the only people who are effected by it are the users who wanted to see the post, and the people who put effort into responding.