Celtics fans burned Thomas jerseys after trade

Does this make any sense at all to you?

Isaiah Thomas gave his all to the Boston Celtics the last two seasons, turned himself into an All-Star and a clutch performer in the process, and had nothing to do with the trade that sent him to the Cleveland Cavaliers and brought back Kyrie Irving.

So why are a couple of Celtics fans burning their Thomas jerseys?

I don't get it either. And it's even stranger juxtaposed with the way one Cavaliers fan who posted this with his Irving jersey ( which earned him a retweet from none other than LeBron James):