The problem here is we're not really mad about RNG we're mad about the results. You constantly feel like you're losing for failing rolls and you're simply getting the plot you're owed for succeeding them. There are a lot of rolls that really don't change much, there are some that dump you into combat, and then there are some that straight up fail quests or give you really bad results (Nettie and Kahga).
I think Josh is getting too focused on the RNG of it, Disco Elysium would be fun to play with 1d20, 1d100, or even having that stupid crap from Undertale popping up for you to pass checks. The core issue here is how they're handing rolls, what they are making rolls, and what we get for failure. If all you do for failing rolls is close off story, and all you do for success is give me the story of course I'm going to save scum.