“Rabbeinu Yona expected the reader to have enough common sense to understand that he wasn’t referring to a (perhaps from his perspective purely theoretical) different situation where halacha would indicate otherwise, which on the tzad to keep the statu quo, it does so indicate.”
Again, you have yet to show that there is a tzad to keep the status quo.
I did!!!!!!!!! The existence of a shitta that one shouldn’t or doesn’t have to based on Mesorah, or nignaz!!! Once either of these shitta’s exist, than the tzad is demonstrated to be valid. Again you’re making a logic error. You can’t use R’ Yona as a raya to undermine the the shitta itself!!