General feedback is welcome on this post, ...
"On Hold" had been used to label recently closed questions. The idea was that this language would imply less permanence to the current state than "Closed". However, user research showed that this distinction was generally found to be confusing to users at all levels, and did not seem to have an effect on reopen rates. So we have removed this label.

I never heard of anyone being confused except people with 1 rep, but other people kindly explained in the comments what the shortcomings were and what was necessary to get it reopened.

Now it's clear it's closed.

"We've closed your question because we didn't like it, have a nice day ...".

That's not welcoming or helpful.

It would be better to say: "There were some problems with your question and it's been placed on hold, you can re-edit it or wait to see if some advice is offered in the comments. Please read the help if you need immediate assistance.".

General feedback is welcome on this post, ...
"On Hold" had been used to label recently closed questions. The idea was that this language would imply less permanence to the current state than "Closed". However, user research showed that this distinction was generally found to be confusing to users at all levels, and did not seem to have an effect on reopen rates. So we have removed this label.

I never heard of anyone being confused except people with 1 rep, but other people kindly explained in the comments what the shortcomings were and what was necessary to get it reopened.

Now it's clear it's closed.

"We've closed your question because we didn't like it, have a nice day ...".

That's not welcoming or helpful.

Where it's clear that the question is unwanted, such as spam or a "programming question" on a non-programming site, closing is fine.

When it's an unclear question, missing necessary details to reproduce the problem and confirm, lacks focus, or seems opinion based, then a hold is better than an outright closing.

In that case it would be better to say something like: "There were some problems [insert canned problem description] with your question and it's been placed on hold. You can re-edit it or wait to see if some advice is offered in the comments. Please read the help or "How to ask ..." FAQ if you need immediate assistance.".