So, I'm not generally a big fan of alignments generally and I don't have my players disclose their alignments to other players because, more often than not, their actions are better indications of their moral alignment than an arbitrary label. Hell, I'm running an Out of the Abyss campaign right now and the question of alignment has never come up because the core of the campaign's first half is focused on just surviving and making it to safety.Are you gonna cut out just all evil alignments outright and limit them to NPCs? Is everyone supposed to play lawful good chars because anything else in real life makes you an asshole?
But then there is no mechanical reason behind the struggle. At that point you are just struggling for the sake of the roleplay.
Seriously. D&D and other TTRPGs are about roleplay. Good campaigns tend to be focused on creating the immersion that makes those moments the highlights of the players' experience. A shift of modifiers of stat by 1 isn't going to do that. A good DM and group is going to do that. If you don't have that, the game is going to be stale and boring in a hurry.
Do you know what tends to be the biggest difference between the races in D&D in my experience? Whether they have darkvision or not. Even with a negative stat boost, you would still have intelligent orcs and dumb as rocks elves because the racial modifiers only provide floors and ceilings to character creation, artificially limiting potential characters for no particular reason. There's nothing that prevents you from creating stereotypical versions of those races, but it does dissuade players from creating characters that break the mold in favor of stat optimization based on the racial stats. Let the players have the freedom to create the characters they want to. Hell, at least let the player characters be the aberration of their society that so often makes for an interesting character (and a good justification for them to be an adventurer).
I will never understand why there is so much angst over getting rid of a mechanic that serves no purpose but to pigeonhole race-class combinations.