My Answer: obviously NO!
And here's why:
- they weren't involved in seungri's business or whatever he did
- they always warned seungri about his shady friends so they did their part as group mates
- gdragon even wrote lyrics about how he declined hanging with one of seungri's shady friends who approached him
- top said that seungri hangs with shady people and told him to watch his back because seungri is quite naive
- taeyang mentioned that all 4 of them always hang out together but seungri has his own group of friends
- big bang never pretended to be close or best friends, they always said they see each other more like business partners than friends, excluding taeyang and gdragon who are best friends
so yes, don't hate on big bang because of seungri, he isn't a part of big bang anymore and the other 4 members aren't involved in this
btw I don't mean "don't hate on bb" because haters gonna hate, but "don't hate and take seungri as a reason"