EA provided ample opportunity for issues to be pointed out with Larian's' interpretation of 5E - most of that was ignored...even though the game was meant be the 'definitive 5e' experience or some such quote from the early EA days. *I* bought into the EA on that basis, so while I enjoyed the game, there are mechanical aspects that make me roll my eyes in disbelief since they are exactly what I would expect a 13 year old DM to allow as being 'cool'. All this has been discussed to death in many threads.
Agreed, but the multiclass system was never introduced in EA - likely because it just wasn't finished yet as we are seeing now. It's really unfortunate because we went over EA with a fine-tooth comb and reported all the exploits - everything we reported was fixed in the full release. We could have caught this before it got included.
The real problem is that it's going to poison multiplayer games on the Larian Discord - which has already had issues with people bringing their own cheats and mods into games with unsuspecting players. (Yes you can bring in a mod that sets your and everyone else's XP to max without them having to get the Mod - another exploit btw). This has caused games to be abandoned in disgust.