Really interesting thread by Karim Zidan on twitter:
https://twitter.com/ZidanSports/status/1010257201770913792
Basically, Egypt's training camp is based in Chechnya, home of horrible dictator Ramzan Kadyrov, and Kadyrov is obsessed with using Mo Salah as a propaganda tool. He is the most popular Muslim athlete in the world, after all, and Kadyrov has used that + the general support for Egypt against Russia to legitimate his rule and launder human rights abuses (he has a long history of doing this with MMA as well, for the record)
Well, turns out Salah is sick of being treated as a zoo animal for a murderous strongman, and is now thinking about quitting the national team