If you think "a dumb cartoon about a horse?", no. This is maybe the best dramedy about depression, success, and failure ever made, live-action or animated (the other contender is Neon Genesis Evangelion, which is about the crushing weight of parental expectations told with giant mecha and alien angels at the end of the world).
Finally finished S4 and now all of S5.
S1 was a funny show about depression. Not all that coherent, still wandering between Simpsons gag format and long series drama.
S2 tries to cover up depression with work and success, and has an epic meltdown. The most coherent season so far, but the least fun. The one that hits closest to me.
S3 is the hangover after success, and then gets real fucking dark. But E4, "Fish Out of Water", is something everyone should see; you don't need a lot of context for it.
S4 spends a lot of time in flashbacks, especially to BoJack's mother who is awful. E7 "Underground", E8 "The Judge", and E12 "What Time Is It Right Now" are fantastic, though.
S5 has been more like S1, dramedy with no real point, Princess Carolyn's flashback and the eulogy both dragged on forever, but E8 "Mr Peanutbutter's Boos" 25 years of Halloween parties was perfect. The meta-show Philbert is a dead ringer for many of the crime dramas I watch.
There's long stretches of BoJack that I find almost intolerably dull, and start zipping ahead 30s at a time to see if the plot advances. I have my own family hangups, I can't be expected to care about BoJack's shitty family.
There's other times when it's the only show that's ever talked honestly about this stuff.
★☆☆☆☆ to ★★★★★ but averaging around ★★★★☆