Earlier quoted context omitted.
I strongly believe GitHub has the same dynamics as most "big tech social media". Where anything that drives "engagement" gets prioritized. From algorithms that make alt-right/neo-nazi's more visible because the controversy drives "eyeballs" to features that are removed or never implemented because they would lower engagement. I'm confident that GitHub has a good prediction on what will happen if they roll out feature…
It would be a baffling decision for GitHub to make any product decisions based on engagement. They don’t even serve ads, what benefit do they have to an engaged user?
Engagement means people have you in their workflow, on their radar. I would love it if Github is something that I don't have to think of, that is invisible and out of my mind. I'd love it if it's something I never have to visit, open, see or interact with; as as little as possible. I'd love it if it were preconfigured to take work from me rather than impose yet another inbox, timeline, bookmarks, "likes" and so on.
And if you consider "advertisements" very liberal, that's exactly what Github is: a place for companies to attract eyeballs and engagement on their software.