I'm sure the numbers of people wrongly using those terms has risen at least a bit, but I think the anecdotal evidence you have is likely to be a mixture of that and also not that.

Similar to how some people look at raw stats of autism diagnoses and think hugely more people are becoming autistic when in reality it's that we've got better at diagnosing autism; I think we (society, in at least some countries) have got better at being honest about mental health conditions. Meaning that more people, especially younger people who've grown up around less mental health stigma, will talk about having an actual genuine problem even without more diagnoses or more exaggeration. I think studies would be needed (that I'm not aware of) to figure out how many more people are using labels that don't really fit, vs how many more people are being honest about actual serious conditions.

When I was in my 20s, if I needed a day off work because of depression I would always use a bullshit excuse to avoid mentioning the actual reason. I don't any more, most of my colleagues know what issues I do or don't have. And the younger generations are starting from that place, rather than having to grow into it.