Picking a ttrpg system (or a computer game engine) is about finding something that does as much of the work you don't want to do for you. If a system doesn't do much of the stuff you want it to, find a different system. If it does a bunch but has just a few things you don't like, it may still be worth spending some time fixing the parts you don't like. Or if the parts that are bad are also the parts you want to do for yourself anyway, then go for it.
There's arguments about systems because different DMs have different design strengths, weaknesses, and goals, and what you're looking for in a system changes from person to person.
And then the meta-rule for engine selection is, the best system in the world doesn't matter if no one plays your game. So if your party is only interested in D&D or rules light systems or whatever, don't let the perfect be the enemy of the good.
Picking a ttrpg system (or a computer game engine) is about finding something that does as much of the work you don't want to do for you. If a system doesn't do much of the stuff you want it to, find a different system. If it does a bunch but has just a few things you don't like, it may still be worth spending some time fixing the parts you don't like. Or if the parts that are bad are also the parts you want to do for yourself anyway, then go for it.
There's arguments about systems because different DMs have different design strengths, weaknesses, and goals, and what you're looking for in a system changes from person to person.
And then the meta-rule for engine selection is, the best system in the world doesn't matter if no one plays your game. So if your party is only interested in D&D or rules light systems or whatever, don't let the perfect be the enemy of the good.