Larian have consistenty made it plain that they are basing the game on 5e, but will change anything that, in their opinion, does not make for a good video game experience for the majority of players.
If you want a totally RAW experience, you would do better to request it as an additional game mode for release, rather than continually imply that Larian don't know how to make video games.
I'm not defending their choices, merely their right to make those choices, based on their commercial and artistic wants and needs.
The purpose of EA is largely for them to experiment to see what works and what doesn't in the context of the video game they are making. If you wan't to convince them to make changes, you'll have a better chance by showing how particular game experiences would be improved, rather than engaging in statistical analysis of a ruleset that doesn't actually cover all the elements of their game.