A system that doesnt try to archieve balance in any shape or form is The Elder Scrolls.

Pre-Skyrim, the inbalance inherent to this system was just completely legendary. Like you could exclusively level on just social skills and develop zero combat ability. You could never get higher stat bonus but one. Etc.

BG3 may not be perfectly balanced, no game ever is, not the least because balance isnt really an objective criterion in the first place. But overall yes the system tries to archieve balance.