I've been perfectly fine with changing the fighter. I just continue to request one feature be put into the lore: if you want a fighter to do supernatural things, give them a supernatural power source. This idea is apparently extremely controversial for a group of people who think the fighter should be able to fly, throw mountains, and kill hundreds of enemies in a single round all using nonmagical abilities that cannot be countered or negated, all because wizards can cast wish and that's not fair.
Everyone "agrees" that the fighter needs to change, nobody agrees how much. One person says John McClean. Another says Goku. Another says Captain America, while another says Captain Marvel. Some want Hercules and some want Hawkeye. You can't design a class that satisfies all of them.
Personally, I think the two best ideas have been to kill the notion of nonsupernatural classes (every class has access to supernatural abilities, like the monk and blood hunter) and to break the fighter info a handful of classes each with a unique niche and power set. Now you can have a dragonknight that flies, uses dragon fear to court foes and has aoe fire attacks to augment his martial attacks and a nightblade who can go invisible, move through walls and summon shadow duplicates to help her fight.
But no, just keep arguing how 4e had it right and 5e messed it up in a silent edition war that never ends...