If they are designed for aim assist, they wouldn't play well without them.
And designing a good feeling aim assist isn't easy either, few games get it right.
I don't consider aim assist inherently bad. It just make them casual friendly. Would rather play Halo than something like Animal Crossing.
it's not about aim assist being bad or if a game is designed around it or not.
simply the act of moving the right stick to aim has to feel good imo, and it simply doesn't feel good at all in Halo Infinite or Destiny.
that's why they have that massive amount of aim assist in the first place. for real, in Halo Infinite you can take the Battle Rifle and aim very clearly above the head of your enemy and still get a headshot. I'm talking ~1.5x the diameter of your reticle above...
there's 1 weapon that is different tho, the Commando.
the Commando in Halo Infinite is hated by many, a lot of people call it just a worse version of the Battle Rifle.
the reality of it on the other hand is that the Commando is in fact objectively the better gun. it's more precise at a distance and has a faster Time To Kill than the Battle Rifle.
so why does everyone think it's the worse gun when in fact it's objectively better?
simple, it doesn't have as much aim assist as the Battle Rifle, and because the aiming in Halo Infinite is so shit, people can't hit shots with it on a controller, which is how the majority of players play the game.
In Halo Infinite, just to make it fair for Mouse players, even on a Mouse you have aim assist (because you could literally not compete on mouse if you didn't have that) so even Mouse players prefer the Battle Rifle because they have a shitload of aim assist on top of having the benefits of mouse aiming