While I'm not agreeing with you on Miles Bridges (I personally don't know his history one way or the other), I most certainly understand your position. It's hard to root for a team when you don't like the players on the roster or at least have at deep dislike for one or two of them.
That's among the reasons I have deep disdain for all the KK rumors that have persisted over the past couple of years. Not only do I not believe he's a net positive player, I don't like HIM. And if he's added to this team my enjoyment will be greatly diminished. And I don't want that to happen. So I get your reasons for not wanting Miles Bridges.
I'll even take it a big step further. While I was lobbying hard to draft #77 in the 2018 draft, and was one of those deeply perplexed, befuddled and pissed off when they didn't draft him -- I don't lament the decision the way I did years ago. In hindsight, I'm only sad they took Bagley and not JJJ, Mikal Bridges, or SGA instead.
Because I wouldn't take #77 now under any circumstance. I don't care how great of a player he supposedly is. And how he might improve this team. Because I can't stand watching that kid play. At all. He's developed into an unwatchable, unlikeable player from my POV. Not only do I not like slow, prodding ball dominant players like him -- the dude has developed into a bigger crybaby complainer than either LeFraud James or Draymond Green. He whines and cries on seemingly every single play, looks to draw fouls by flailing his limbs, falls to the floor and feigns injury more than any player that I can remember. He's the European equivalent of James Harden, the bearded hag and traveling chucker. Except even the hag didn't whine and complain half as much. #77 is the amalgamation of the worst parts of Harden, LBJ, AD, Danny Ainge, Bill Laimbeer, CP3 and Boogie Cousins.
If he was a KING, I'd have had to divorce the team. As much as I loved the Webber-Vlade-Peja-Bibby era, the one thing that irritated me about that team was all the whining and complaining they did -- especially Vlade. Well, #77 takes what they did and amplifies it by a factor of 10.
To summarize, I'd rather root for a middling team consisting of players I like versus a title contending team consisting of players I loathe.