The major problem I see with these are linkrot. Do any of us truly believe these links will work 30 years from now?

Post IPO, many years down the line, a leadership that is eager to cut costs will look at their storage usage and expire 7 year old non-training sessions. Quickest thing to go. I have zero faith in any successful provider getting this right.

Git is supposed to be the durable storage medium, self containing and weathering the passage of time. Now we're littering the repos with a bunch of URLs that are only helpful in the short term.