It's a Fast & Furious feud. It's a street race of words, and a drag race of Instagram shade. It's Tyrese from the surprisingly resilient film franchise yelling at Dwayne "the Rock" Johnson on social media.
No, it's not particularly important, but it is interesting to watch Tyrese spell out his grievances in long-winded, punctuation-phobic Instagram posts.
Tyrese is apparently upset with the Rock for staring in a spinoff movie as his law-enforcing character, Luke Hobbs. There is allegedly some sort of Fast & Furious bond that prevents standalone movies from individual cast members. The Rock apparently missed that memo.
The Fast & Furious star is also upset because the FF9 has been delayed until 2020, which, even though it does kind of suck, isn't all that uncommon. Movies are delayed all the time.
https://www.instagram.com/p/BZ2e3q5H81g/
This whole thing will be worth it though to see the Rock try to defend Baywatch.