POE2 Very nice campaign / Frustrating endgame

After 6000h on POE1, i was waiting for POE2 like a child waiting christmas.

Honestly the main campaign was very good, challenging but not too much and not punitive

For the endgame ... That one try thing isn't fun at all, you have to focus every second even in a T1 map with a decent stuff and resistance capped.
I have 2000hp/1000es and i got one shoted by a boss in a T1 map.
I can't even imagine higher tier, when doing a T1 map on POE2 seems like doing a T17 map on POE1.
Squishy builds are not possible, tanky characters are mandatory for the endgame.

I hope we'll be able to have 6 portals like POE1 and don't have to always hard focus.
If i had to compare, it's like the arrival of SBMM on competitive games (absurd comparison but that's the feeling i have), the end of fun.