I don't think psychiatry is a joke but I certainly noticed the newest DSM became a lot more relativist. It redefined a shit ton of stuff. A lot of physicians noticed the trend as well, a lot of stuff that we didn't treat for are now psychiatric conditions according to the new DSM. People think we're creating our own problems so that we can solve them, especially when it comes to leftist stuff like gender dysphoria.
Depression is definitely not a meme. However, don't read these "statements" the association makes, read the actual studies mentioned, I'm sure they will be of far higher quality.