The OP link feels like a list you scroll until you see something that interests you, and you jump on that. An ideaboard.

The link in this chain feels like a mini-curriculum. AKA "you do all these 7 things and you'll probably become very good at any job". a decent university will probably have you do 4-5 out of these projects (making a spreadsheet program is truly a huge feat, though).

They both have some use, but different use cases in my eyes.