Hey there, just wanted to say as a remote junior dev who has been at it for about 10 months now, that I appreciate the article a lot. These 10 months have been the most difficult of my life, professionally speaking. I was assigned a mentor, but there were no training exercises, or "easy bug fixes / small wording changes to make, so they can focus on learning the workflows" quite the opposite actually, and no processes explained or documented anywhere.
I'm a bit older and I couldn't imagine going through this as a fresh grad out of college. I would have loved to have had my hand held in my first days as a dev. I was constantly demoralized by not having the domain knowledge (and not having any comprehensive documentation to learn it), being assigned complicated stories (that even the mid/senior devs had trouble with), and by not having anyone just regularly check in with me and make sure I was doing ok. I would like to continue working remote indefinitely, but man it was really tough starting out as a dev remotely. I say all this to say I do think it's possible to successfully onboard a new dev remotely, but there has to be a plan and resources available to do it and I think your article is a good template.