This proposal has exactly 100 users, many who joined very recently, who only follow this proposal and have no associated Stack Overflow accounts.
Nearly a quarter joined in the past 12 hours.
I call shenanigans.
There's nothing fishy here. This is how Stack Exchange sites are supposed to be created — someone going out to find an enthusiastic community to support their proposal rather than relying on the existing Stack Exchange community to build it for them.
Stack Exchange was never intended to slice up the Stack Overflow pie into increasing smaller pieces. It was designed to spread this Q&A engine into more audiences.
So that's what looks so off here — they did it right.