Right but if Zagreb had made it through the playoffs last season they could've ended up in a group with Feyenoord as the pot 1 team, Porto as the pot 2 team and Red Star Belgrade as the pot 3 team...none of those are meaningfully better than Salzburg or Monaco, who Dinamo got 4 pts from.
While there could have been a group of death with Bayern, Real, Milan/Shakhtar, and Newcastle; where one team that would've won that first group was guaranteed to be eliminated and another was guaranteed to play EL. Under the current system that's no longer possible.
The luck of the draw can screw you under either format, it's just a question of whether you get screwed by your schedule or your group. And the current format seems more forgiving to the top teams unless you just pull a Leipzig
It's comparing apples and oranges though.
Whatever happened with the draw in the old format, you played exactly the same opposition as all the other teams in your group.
PSG might be in a group with BVB, Inter and RB Salzburg, and City with Bologna, Dinamo and Slovan - but in their respective groups, if PSG lost out, it was cause they did worse against the same opponents.
Any team losing out can't complain, they had the same environment as everyone else in the group.
In the current system, Dinamo (this is just an example) could end up ahead of PSG without ever facing the same opposition. PSG barely has a "weak" game on their schedule.
Dinamo has Slovan, Salzburg and a winnable Celtic game. Doesn't matter that they get destroyed 9-2 or routinely beat by BVB... They will also likely concede 3-5 goals vs Arsenal and Milan as well.
But because this is basically a league table, points against sh*t teams count as much as points against the top team - which is fine.
What is NOT fine, is that one team plays only top teams and another plays 3-5 games vs sh*t teams.
If you're comparing the old system, it's be like a group of PSG, Inter, BVB and Salzburg - but BVB (for example) only has to play Inter and plays 4 games vs Slovan and Sturm Graz.
Anyway... I dislike it, just trying to explain why I (personally) dislike it.
Entirely fair if someone else prefers it.