Yeah, there are some real head scratchers. Derrick Rose, Austin Reaves, Kevon Looney. Westbrook is odd also plus Davis has hardly played (25 of 38 games). I am not up in arms regarding where Tatum and Brown are. It is fan voting. As it stands, Durant would be the starting SF, Tatum the back up. I prefer Tatum but I am not outraged that fans vote more for Durant. And for Brown, I don't understand Irving but Mitchell has been great. Again, I prefer Brown over Mitchell but understand fans voting for Mitchell. And Harden has declined but is still an elite player. He probably deserves more votes than Brown.
My East Starters would be:
Mitchell
Harden
Tatum
Giannis
Embiid
If I was building a team, I might pick differently but for the all star game, based on individual performance, these are the best in my mind. Durant, Butler (as a guard though), and Brown are not far behind though.