While BG 3 does open with Mindflayers, Demons and Dragons they are all busy fighting with each other - they have little to no interest in you, only the most tangential of involvement with you at that point, and your eventual "escape" is circumstantial at best - you have little control over the outcome of the situation. From then on, any high level content is mostly hints, omens, harbingers and future possibilities. Nothing screaming immediate, impending epic-ness is upon you.
And yet we are pitted against a Hag, two Minotaurs at once , a Spectator and debatably the hardest fight of early access - a Githyanki raiding party. Nudging anyone into the Underdark before level 5 should be a death sentence, let alone them surviving a surprise encounter with two massive minotaurs. And some of these fights are engagable even before you hit level 4... sure the enemies are capped at level 5 but its a stretch to call those low level encounters.
