Trinidad fought Jones at 170. That was well out of his depth. While 160 wasn't his prime or best weight, I don't think it had anything to do with being too small. He had 2 wins, and the 2 losses had nothing to do with size. You are probably looking at Trinidad and just said that he was a blown up welter, but there hasn't been an instant where you were like, "Wow, Trinidad just can't hurt that guy and is getting man handled". Because like I said, it didn't occur in his 2 losses and he won the other 2 in impressive fashion.
I just think when someone says "Hopkins beat a blown up welter" it is implying he won because he was small. Wasn't the case, Hopkins would have beaten him any where, any time so I don't understand the point in emphasising that he was a blown up welter, because it is irrelevant in the Hopkins fight.

It may be irrelevant, but nonetheless true

Well maybe, but you are just going by how he looks physically. Like I said, there wasn't a fight at 160 that made you go "wow, he is just too small and getting pushed around". He got ou tboxed thoroughly in the fights he lost and won impressively showing power in the fights he won.
The only fight where you could tell he was out of his league physically was the Jones fight, he was landing, but you could tell he had nothing, and looked small and weak. Couldn't determine that with Winky and Hopkins.

I don't recall how I came to that conclusion. Think it was a PBF interview where he basically says that certain guys @ 140 don't want to fight him...

can't wait

Oh my.