I never really thought about it. Just assumed him being a Don King rip off meant he was supposed to be unlikable. 5 was not the movie I over analyzed case it's stitched together with duck tape and clown jizz. Seems like bullying trying to logically test it.
That said, I like all the Rocky movies, except for the Creed ones. To be fair, only tried watching the first one and, like with the force awakens, it felt like somebody singing karaoke inferiorly. Just made me wanna watch the original instead, so I did. Also, modern day Stallone's idea of good filmmaking is an over contrasted blueish digital frame with shaky TV camera work. It just looks cheap. It was tolerable in Rocky 6 somewhat, but Creed just looks like a TV flick. Not as bad as Rambo 5, though...
I think 1-2-6 make up the best, most grounded trilogy. 5 revisiting the old locations kinda gets me. I guess I like it as Rocky tourism. 6 was surprisingly good, following Stallone's decent into obscurity, but I can't say I've revisited it as much. 1-4 remains the king shit and always will be.
So I'm not mad at anyone for ignoring everything passed 4 cause I like my Rocky uplifting. Not him broke and dying alone - boozbag Paulie notwithstanding - all sick, milky eyed and miserable. It's not how you want a hero to go out.
And since bad endings are not endings, I think that's why the series doesn't have that sense of closure. After 4, it feels awesome. After 6, it feels like... "I guess all of that happened".