Everyone supports "mental health" until they actually get called on to do it. I lived with nominally supportive housemates in college who would say "mental health is important! Believe in yourself!" Then when I started falling apart in my final year they got grossed out. They didn't want anything to do with me. Why invite the depressed person to anything? They're just gonna end up miserable. Talking about depression is gross and yucky, eww, uncomfortable, go to therapy, that's your fault. So they just ended up excluding me from everything they did because it was easier for them.
cw suicide
It took a suicide attempt for them to even ask me if I was doing okay, after a year of my being vocally and visibly depressed.
It sucks finding out that good people can be bad friends. Yes, it would have been uncomfortable and difficult for them to help me. It would have taken some work. But they turned out to be the kind of friends who only like you when you're fun and smiling.
Obviously my depression made things harder for them. It made things harder for everyone. That's why I needed their help, and they didn't give it to me