I'm kind of surprised that optimized builds even exist, at least outside competitive games.
Back in the day when I was playing tabletop RPGs, the standard GM approach was that meaningful advantages must be balanced with meaningful disadvantages. Encounters where the characters had to face their weaknesses were supposed to be common. It didn't really matter if your characters were optimized as not.
Character builds as a concept were just some video game nonsense that had no place in actual role-playing games. At least among the people I used to play with.
It depends on the complexity of your campaign. Back in the day when I played D&D, we had a DM who would throw together typical hack-and-slash-and-loot campaigns, in which you wanted to maximize your STR, CON, DEX, and INT( if you were a magic-using class ). Nobody wanted to assign points to anything else, as they would be a waste.
It takes a good DM to balance a campaign, especially for years. And I suspect most DMs are pretty bad (I'm guessing, haven't played in over a decade now).
This is a valid point and it's honestly one of the things that I really enjoy about the Dungeon Crawler Carl series. One of the main character's best weapons is charisma. Multiple different types of spells or abilities are modified by secondary stats, like charisma with charm or illusion spells.
I haven't played D&D in, like 30 years, but I don't ever remember those types of game mechanics being involved. If they are now it would make for some great potential combinations. If a dwarf gets -1 INT and +1 CON, but certain types of spells use CON as a modifier then it creates an interesting combination.
Back in the day when I was playing tabletop RPGs, the standard GM approach was that meaningful advantages must be balanced with meaningful disadvantages. Encounters where the characters had to face their weaknesses were supposed to be common. It didn't really matter if your characters were optimized as not.
Character builds as a concept were just some video game nonsense that had no place in actual role-playing games. At least among the people I used to play with.