Calling someone an asshole is inherently opinionated. No need to add "think" to the sentence.
lol
I disagree, but I don't have time to elaborate this morning. FWIW:
https://en.wikipedia.org/wiki/General_Semantics
https://en.wikipedia.org/wiki/E-prime
Cheers.
Here, let me fix that for you:
"And I think Drew DeVault is kind of an asshole."