I'd be mildly (not completely) surprised if Vidanta actually did this. Is this new? I understood it was enforced through the exchange platforms...also understood if you have a spouse/partner and the reservation was in their name, then you could get more than 1 in 4 since they were going by the name on the reservation.
I would have said yes...but then I saw
@Eric B posted something different. Maybe you could be the TUG test case. We exchanged plenty of times in the past (we would go 2x/year) through II. We were always told about the 1 in 4, but it didn't apply to II exchanges at the time. I think II now has the same (or they did at one time).
There's only one way to know. Someone on TUG could press their luck and get reservations/exchanges in back-to-back years using different platforms (or renting from owner), then let us know.