Deadspin (from the linked McGregor tweet) seems a great website. The first half-sentence of the McGregor article reads -
“Full-time MMA fighter and part-time racist Conor McGregor”
Surprised they didn’t switch it around and go the part-time MMA Fighter, full-time racist route. He is a part time fighter these days after all.
I think there's just two guys on Deadspin who cover MMA, and they both hate Conor. One is Patrick Redford, he's the main one I think. They went crazy when Conor told Mayweather "dance for me, boy" during those hype event press conferences.
I actually really like Deadspin. Yeah, they are full SJW, but a decent amount of their articles and/or hot takes around social media are pretty funny. The funny ones are mostly the ones that don't have anything to do with SJW/politics.
I don't think Conor is racist. He's a hooligan, a provocateur. He's called Jose Aldo, Chad Mendes, Cowboy Cerrone, and Mayweather "boy" at different times. It's just something he says.