"TES 6 will suck because it might not let me ignore/promote slavery "
Genuinely, the guy is complaining that the game, that we know practically nothing about, will probably give you a questline to liberate slaves.
At the most basic level (I.E. role-playing as an evil character) I sort of agree. But, like, they're not going to force you to do the whole quest. Ignoring the prompt is the evil option. If you ignore the questline, the slaves remain slaves.
The problem isn't wokeness. I doubt anyone would object to the concept of role-playing as an evil character. Hell, it can even be beneficial to role-play as an evil character, as it can provide insight into what motivates evil in the real world. Bethesda isn't trying to take away evil options because they have a woke agenda. Bethesda isn't going to give us evil options because Todd Howard is an idiot who believes having broad gameplay is the same as having deep gameplay.
I made my Nevarine head of Telvanni, then located all the slaves and killed the people holding their keys and freed them. Didnt get expelled because Telvanni can kill each other without (official) consequences if you're strong enough.