Yep, they want mass appeal. So that is leading towards jack of all trades and master of none.
Have you not noticed a pattern in what they are trying to do? People did not like the dice rolls and hate the RNG. Oh, we will give you loaded dice so you pass the checks way more often despite your characters having poor modifiers or stats.
Oh, we want everyone to hit all the time even at low-level DnD play. We will give everyone ez-pz advantage for both spells (high ground) and melee (backstab) and lower AC across the board so everyone can hit way more often for morale.
Oh, you are not used to resource management and spell slots? No problem. We will make resting unlimited and without restriction so you can have all your spells up all the time and not worry about needing to save them for big battles.
At this point, I am convinced they will introduce a game mode with no dice at all for those that hate any RNG element. And maybe the image and illusion of dice will still be there, but you will pass 100% of non-combat checks.
They are scared to alienate anyone because that is less revenue. It is a lot of people who are interested in this game that only have DOS1 and DOS2 background with no knowledge of 5e mechanics and the training wheels (homebrew and Larian-friendly building) have to be put on so they are more likely to buy and play the game.
I generally don't mind the existence of loaded dice at all. It is an optional thing, and I would rather we spend our effort hammering down the fundamental flaws with the combat system itself than something on the side that manipulates the RNG. The only issue I take with it is that they spent dev resources and time creating and promoting it, rather than addressing the fundamental flaws.
As you've basically said, I don't think the RNG itself is really the issue, it's how the homebrew rules really emphasize the absolute extremes of the RNG. It skews everyone's perception to the point where any attack without advantage is seen as a bad probability. Hence my constant arguing on Reddit last week where I mention that the combat system of BG3 at its very core is deliberately designed around using DOS-style homebrew mechanics to completely circumvent DnD RNG, and failing to take advantage of said mechanics means you immediately get slapped with penalties that mess with your RNG to a level far worse than you'd ever see from literally any other turn-based game. People need to realize that someone responsible for the combat design in this game really put actual thought into things like shoving from stealth having a 100% success rate, along with damaging field effects and exploding barrels not allowing any kind of saving throw to mitigate their effects.
It's kind of like video game reviews. 'Journalists' hand out 8-10 scores so often now, that anything lower than that is seen as a terrible game by all metrics. Even now, an AAA game scoring less than a 9 is seen as a complete failure.