It's been a one-episode-a-week slog for me; I've struggled with that show for its entire run. First, when it started as a broad comedy before settling into a smarter, more emotionally raw place. Then, around season 3 or 4, I got really tired of Bojack's constant backsliding; every step forward was met with two steps back into a deeper, darker rock bottom.
This may be an unpopular opinion, but sometimes it felt like the show (and reviewers) was proud of itself for simply portraying depression, while it often failed to elevate the discourse above "being depressed hurts, and self-destructive behavior has collateral damage." I may be oversimplifying, and I may have a chip on my shoulder; having done standup for several years, I’m pretty jaded about lip service towards mental health and joking about depression in place of seeking help.
Knowing that things are headed towards a conclusion is helping me see it through, and you know what? I think we don't praise this show enough for its comedy. I watched the episode with Mr. Peanut Butter's surprise party and loved the pacing and delivery of all the visual gags. So much contemporary animation fails to take advantage of the ability to throw countless visual gags at the audience, but Bojack delivers in spades.