I finally got it installed and then followed some tutorials only to see that Rails' html.erb files have completely broken syntax highlighting in VSCode and other editors. I facepalmed and though I tried to search for a fix online, I couldn't find one. I saw posts mentioning it in forums and yet not a single solution posted.
So I gave up. I tried in Mac, Windows and Linux. If someone here knows how to fix the broken highlighter, that can be my Christmas gift today, but for the most part I've moved on.