This is even worse tbh, because, as someone else pointed out, the YouTuber is a programmer. This is saying “only write code, don’t discuss what kinds of changes are needed.”
That + the “commit a pull request” nonsense (you submit a pull request, which comprises commits; the PR only gets committed when it’s been reviewed and merged by a maintainer) makes me doubt that the commenter you replied to has ever collaborated productively on a software project.
You can use a controller. I got further in Dead Cells on my phone with the Backbone One than I did on my Steam Deck. Maybe the same would be true with Hades - it’s a shame the Netflix version doesn’t (or didn’t; I haven’t checked in months) support cross-save.