But here is the thing - at the end of the day it doesn't matter (to me) that Larian tweaks the rules - what matters is do they balance those tweaks by ensuring the encounters are challenging and fun. If no one was showing up on this forum saying the encounters are too difficult I would be worried. That people are showing up on the regular and doing just that makes me extremely happy.
I mean do you find it too challenging or unfair?
Too challenging? Depends on how much you weight fore-knowledge. Once you have the knowledge about the encounter it's easy, but for a player on a first playthrough... The game balance allows for little room to be proactive or reactive. Players should be able to react to a bad situation and turn it around, not get buried by damage because the enemy has Advantage from being a few meters up in space.
Unfair? Not really, but it's definitely lop-sided. The impact of verticality giving Advantage for attacks and Disadvantage on incoming attacks is enormous. The lop-sided homebrew makes combat stale. Too often the player is required to make the same few choices.
Combat, in early access, is stale and requires fore-knowledge.