I can accept your overall point, but this specific bit really bothers me (including when others keep saying this same thing). D&D 2e and 3e were TB too, and yet we got the IE games and the NwN games where RTwP worked totally fine. So this argument just doesn't wash.
Then complaining about straying from the ruleset it insists to inherit is hypocritical.
Edit: Not saying you are. Just that referring to those games as good interpretations of their ruleset at the time is inaccurate. If you change something that fundamentally changes how the game is played, then it's not an accurate translation. So making BG3 RTwP is one of the biggest deviations from 5e that could be made.
Whether it's better or worse is irrelevant.