Who has he called a racist aside from Huff (who has a pretty dubious rep for his Twitter account)? I vaguely remember him agreeing with Keith Law about some vague language in a quote from a Jays official which Law (not Stroman) brought up as racist. I don't think the list is as long as you think it is, unless I'm missing a bunch. Plus you can't just assume he's playing the race card out of the blue in every single case. As far as him taking things personally, Jose and JD took everything personally too. JD told a man FYSMC in front of the camera. These guys were passionate dbags as well. Stroman is just vocal about it on Twitter. I never said I agreed with all the stuff he wrote about, but I'm also not going to say he's a headcase and a bad teammate because of it. Like I said, as the league gets younger, the more players are going to have grown up in the social media era. Baseball has a much lower presence than other sports when it comes to social media posts, but a lot of young athletes are just as vocal as Stroman is. Just not in baseball.
I'm not a LeBron fan (I actively root against him), and I do think his "social justice only when it suits me" attitude is obnoxious, but he's not a moron. He's playing to his audience/fanbase, just like Stroman is, just like everyone who overuses social media platforms. You can agree, disagree, whatever, but being a dbag on social media or even on the field is only a bad thing if it impacts the results on the field. Stroman was not a problem when the Jays were making the playoffs, and other than Grichuk hiding behind a Huff Tweet, there hasn't been much evidence of former teammates bashing him either (unless I missed it).
For the record, I'm happy with Ryu/SWR/Kay instead of Stroman, so not sure why you think I'm Stro's biggest fan here. But there is a reason why MLB can't attract a younger fanbase, it's because their fans are conditioned to believe players like Stroman and Bautista are problems. The league will become more popular if there are more Stroman's, JD's, Jose's, etc, in it, and fewer Grichuk's.