If someone repeatedly asks people not to do something and people keep doing it - I consider that disrespectful. I am not able to know what is or is not helpful for another and I don't really believe anyone else is either.

In the US - it varies from state to state.

To answer the OPs questions
1. I don't know about your specific mds and whether they are useful or trustworthy or not. In my professional experience some are okay and some are not - I don't have dealings with them on a personal basis so I don't know from that angle. I would think one could consider going with one's general experience of them.
2. In my jurisdiction they could and often will involuntarily hospitalize you on the basis of such info. I don't know about where you live.