Dump stats is normal at the table-top, because you tend to balance out the group not the character.
Some stats just don't have much affect on your character, and your character would help the party better if you had high strengths in some areas. If you are a a 12 in all stats sort of character then you aren't bringing anything to the party.
In BG3 though, this isn't currently true. Right now it's good for the main character to have high stats in all stats, since they will be doing all the tasks.
You want strength for inventory and moving things around. Sure other party members can do it, but that require more management (and the game has poor inventory and party management, making it cumbersome to do.)
You want to have high dexterity, because the game only gives your right mail early on as heavy armor, which is demonstrably worse than any medium armor you find. So having 14 in Dex means you'll get the best AC possible. (This is a huge design flaw in the current build. You get Scale Mail +1 BEFORE you get Chain mail? Makes no sense)
You want High Charisma because you'll be the face of the group, so most of the social rolls is on you. I have heard Larian might change this, at which point you can dump Charisma honestly.
You honestly don't need high wisdom or intelligence, but the game has a lot of checks on it, so it's still decent to have. I'd say dump intelligence though, and get Lumps crown, is the best build honestly
