If you mean the latest Fenix 5 beta seems to be 7.56 so where is the 935 equivalent? Don't know but "traditionally" the 935 has not got as many public betas so nothing really to see here as they say.
Where exactly are you finding this information on non public firmware versions 7.91 and 7.93? And if they do exist, Garmin is in no way required or obligated to release them to the public.
most probably he's talking about the beta's for the fenix 5 which are public (and basically the 2 watches share the same hardware) but if you have connections at garmin, you can get those updates (smuggled) as well :D
At the beginning of this thread you were complaining that public betas are released for the F5 before they are released for the 935. Now you seem to be complimenting Garmin for not releasing a specific beta version to the general public at all. I am confused about what exactly it is you want.