From what people told me, Modern and Legacy are ass because there's too many broken combos. Which just tells me that Wizards is a shitty company that designs their product specifically to create artificial churn by power creeping and/or releasing combos that are intentionally broken when used in tandem with prior editions. You have to keep pace with the window or you end up dealing with utter nonsense decks.
There is a design team that's supposed to filter that, so I suppose you could call it intentional, but when you have decades worth of cards it gets pretty difficult to foresee each and every interaction,
especially some really niche shit everyone forgot was ever printed like Mycosynth Lettuce.
I can sympathize that it can be a bad experience if one just wants to play out their little piles of cards without ever interacting with the opponent... and then boom, the combo deck announces that the game is over.
And power creep means it will happen on turn 3, sometimes earlier.
Well, if commander was supposed to be a solution to that, to me that is like treating cancer with ebola. IMO the game already struggles with land draws randomly screwing you and adding additional randomness on top is nuts.
To me, the format's main appeal is the delicate power balance achieved through multiplayer - someone's bound to have an interaction at the moment, so you can't brute force a win, it needs to be sneaked through.
In contrast, what I personally like about older formats is that you get all these tools to manage RNG - fetchlands into shocklands means mana screw is completely preventable and a four color deck is no biggie.
There's also plenty of cheap deck manipulation. If having to interact with the opponent is the price to pay, so be it.
The problem is there's a lot of avenues to cover - graveyard strategies will need a different answer, land-based win conditions need another, storm strategies need something else entirely.
Sometimes you will need a duress and another time a counterspell. Standard sorta works as a Bo1 format (though looking at the current delayed rotation... yeah, not really), but I cannot fathom playing an extended format without sideboards.