I have chronic mental health problems and without medication I might not still be alive. I likely will never be able to function without it, sadly.
Yes, I do think that people whose problems are not so longstanding but largely situational will be able to come off it.
Of course it won't be right for everyone and many don't need it. A lot of people are not in fact experiencing mental health problems, just having a normal human reaction of feeling sad, concerned, troubled etc. The absence of happiness is not a mental health problem. However, many are developing mental health problems and trying medication, while very far from ideal and possibly not helpful, could be worth a try if it saves them from becoming worse.
We shouldn't be in this position but we are, and there is no moral victory in becoming severely unwell because you should have had another way when one isn't available.
I am not convinced by the approach of this govt or any other particularly, I don't know what the most effective measures would be. However, there is no way of going back to normal, if the restrictions aren't messing everything up the virus will be. Ideally we limit the extent to which it is both. So I am afraid I do not buy the idea that the mental health problems all stem solely from an imposed regime, and that there would therefore be some kind of worthwhile resisitance in not taking whatever measures you can to help yourself.