Honestly, I don't know how to be positive about this. Some people experience events in life that are beyond their control, that shape their attitudes. Those attitudes may be judged by a 'healthy attitude' population as 'unhealthy attitudes'.

This ostracizes a portion of the population and can lead to a negative feedback cycle for an individual, because they literally can't learn how to have a 'healthy attitude'. The best they can do likely, is be neutral (i.e. compromise).

Empathy and awareness are 'healthy' too, even if for the moment, it affects that positive feedback loop you've got in your mind. It's the minutia that don't matter, and when it comes to judgement of attitudes, it's honestly extremely difficult to differentiate between overall trends and insignificant correlative details in practice.

The person with the 'unhealthy attitude' may just be wearing a mask of someone they were heavily influenced by, and they may simply not have the resources or the 'luck' to have encountered learning otherwise. All of this can be incredibly draining and isn't your duty or obligation to 'correct', but I think that's where acceptance and tolerance come in.

My point is not everyone has to have the same style mind in order to be considered 'healthy'. People can survive (quite contently) without constantly thinking positive and having to outwardly serve as proxies to reinforce attitudes so we can all convince ourselves 'we are happy and healthy and the future will be swell'. You need all types of people in life to have the world function and improve.

Honestly sometimes I think some people can become terrified to be anything besides positive, and that limits their freedom of speech and ability to grow.