I like to think of it as the same show as Friends, except the writers are all completely totally aware that their characters are absolute pieces of human garbage.
Dennis’s BPD diagnosis was a bit triggering, as that episode aired just after i’d gotten out of a 6 year long abusive relationship with someone who had both borderline & narcissistic personality disorder, and dennis having BPD kinda tracks hard.
I’ve always loved the show, but you have to keep in mind that this is and has always been the premise: all of the main characters are complete shitbags. It’s a parody of the worst of humanity, and it’s an amazing show under that lens.