Those replying may or may not find objectionable
(a) "sluggishness",
(b) "ever-more advertising and tracking" or
(c) both (a) and (b)
Even if a default Windows install was fast, some people might still object to (b)
Other than that, your example of using temporary accounts for some secondary platform functionality is yet another reason why this policy is terrible.
Honest question, how would they detect missing info? If they already knew all my social media profiles, they wouldn't need to ask for it. If I wrote some credible threads on any platform, I assume those would have been detected by someone anyway. Also, I surely wouldn't voluntarily disclose the account I used to publish those.
But even I, as someone who doesn't use Gmail, can quickly understand that interface on the screenshot after zooming in a bit. Maybe it looks a bit chaotic, but there seem to be some menus opened just for the sake of argument. Maybe this UI is incredibly powerful? Maybe they didn't dumb down the interface, which is something that is also criticized here a lot. It's hard to tell from a screenshot alone.
It's hard not to read this in Borat's voice.
How about charge separately for each? I get that it would be awkward to try, but why not.
Maybe the price of a coffee is exactly what people are willing to pay for a seat, a small table, and wifi for some hours.