This is a great post on the subject, with a good example of what toxic positivity can occur. There should always be an acknowledgement of what has happened. While some instances you may not be really close to a person to address a personal matter, you should have care to not be so out of touch in suggesting something that it brings your credibility with that person into question. Positivity disconnected from reality is that aforementioned out of touch state. It is a mania that really does more harm in some instances than good.