I'd put it as a coincidence. It'd be very odd for it to be that specific, since you're getting ~40/50 options instead of all the others. Bad idea.
Not a major setback, though.
I'm sorry but we're way past the point of it being coincidence.
We've seen the following uchi/jock combos, as MKInfinite compiled:
1. Tammy & Bill (Sept Direct)
2. Cherry & Buck (Feb Direct)
3. Tammy & Kid Cat (Feb Direct)
4. Canberra & Drift (Feb Direct)
5. Hazel & Hamlet (IGN preview)
6. Mira & Biff (Eurogamer preview)
7. Flo & Genji (Gamesradar preview)
8. Mira & Mac (GameInformer preview)
9. Katt & Sly (Pax East)
Plus these which seem to follow the pattern:
10. Pashmina & new sheep (Pax East)
11. new horse & Antonio (Pax East)
I know we don't know exactly how many villagers will be in this game, but just to demonstrate the math, there are 472 villagers total that have been in AC games, 224 female (71 Normal, 65 Peppy, 65 Snooty, 23 Uchi) and 248 male (63 Cranky, 76 Jock, 74 Lazy, 35 Smug).
The chance of picking an Uchi out of all females is 23/224, and of picking Jock out of all males is 76/248. Assuming we always start with 1 male and 1 female, the chance of picking both together is given by multiplying the two together = 0.03147 aka. 3% chance.
But we've seen 9 in a row that have that combination. The chance of getting the same 2 personalities together 9 times in a row is given by multiplying its likelihood that many times (or raising it to that power) = (0.03147)^9 = 3.0274 x 10^-14 aka. 0.000000000003% chance.
Plus we've also seen another Uchi (23/224) and another Jock (76/248) in combination with villagers we can't confirm. So multiply those rates on to the end = 9.5x10^-16 = 0.0000000000001% chance.
I think I've calculated that right. That's the likelihood that it would happen purely by coincidence.