Yeah but if you're using Larianisms like Tavern brawler thrower(monk) or double hand crossbows; or 5Eisms like Warlock/Paladin, Rogue/Monk or Gloomstalker/Assassin to beat the game easily - that's really on you.
They're basically exploits at this point and shouldn't be held up as baselines.
You don't need to use any of those as a baseline as you really don't need a baseline, just compare the relative challenge of Tactician to Balanced to see Tactician difficulty level has been set too low. Experience of beating BG3 on Balanced negates any increase in difficulty that Tactician provides.
To my mind the real problem and not just in BG3 is the lack of difficulty levels. Just 3 Easy, Normal and Hard is really not enough. I remember when games like BG would have had a level above Hard with a suitably fitting name to match the difficulty level such as Insane. If BG3 and an Insane level there would be no more "the game is too easy".
