This is one of the main problems with language generally in RPGs. And all games for that matter: The fact that dialogue is the very first thing that ages poorly, provides the most controversy in it's contemporary market, is impossible to fully translate properly across many regions/countries.
For example, the "He hath, he doth and he shalt" olde-english pros of the 1980s and early 90s cRPGs really dates those games to a modern audience who no longer associate that kind of language with the genre and, for those that were of that genre, it became a tired cliché anyway which is why it died out so fast.
For example, Beamdog's Baldur's Gate sequel got more attention for its one single line about transfolk than it did for anything else in the game whereas Edwin's transformation in BG2, which is almost entirely a physical transformation rather than a dialogue-based situation, bats barely an eyelid.
For example, the recent game Legends of Eisenwald, which was developed with a different language to English as it's design language resulted in some quests being incomprehensible when the game was translated to English, resulting in more a negative response than it likely warranted.
Games like Pacman have none of these issues, of course, but games like Disco Elysium will have to walk such a specific tightrope that it's hard to say who will and who wont like it and that their audience is going to much more trapped in the niche of a niche than a more generalised cRPG.
I've been quite impressed with how DE has released so far, I'm not hearing about any bugs and it seems to be very good at what it wants to do. I'm still not entirely sure why its considered RPG and not choose your own adventure and what exactly the RPG elements are beyond some stat choices, but it does seem more RPG than a lot of the current batch of games making a claim to the genre.
I kind of really want to play it, but, like with crpgnut and JDR13, I like reading books but I'm not a big fan of reading games, without much in the way of gameplay I'd likely just find myself loading up a different game when the gaming bug bites.