It is rare and hence should be fixable with hardware or firmware.
Hence, no. Something that affects a small number of users and even then is an intermittent problem with no clearly identifiable cause usually means difficult to diagnose and unlikely to be fixed.
As an example, when the 1D X came out I had a problem with it not saving lens-specific AFMA values. Canon could not reproduce the problem. They said send in my camera. Instead, with the help of another forum member here we determined that the problem only occurred when the orientation-linked AF point setting was enabled. With that info, Canon
could reproduce the problem and it was fixed in the next firmware release. But absent them being able to reproduce the issue themselves, they’d have reset my camera to default, found no problem, and sent it back.
So, do you know what actions you take that trigger a freeze? Is that freeze reproducible every time you take those actions? If so, that’s a fixable problem. If not, then unfortunately you probably won’t see a fix soon.
You can live with missing shots at key moments if that is your wish. I doubt many professionals do. I assume you've had this problem with your R5 II and not reported it?
Your R5 didn’t freeze, but there were ample complaints about R5’s freezing, even recently and through years of firmware updates. If Canon doesn’t provide a fix for the R5 II, what will you do?
I don’t have an R5 II. I have had my R3 freeze on a two occasions (in 3 years of use), with no discernible cause. I have not had any freezes on my R1 yet (obviously a short usage history), nor on any of my current (R8, M6II, M6) or former (R, M2, M) MILCs.
Fortunately, on the R3 (and R1, should it happen), rebooting it is a simple matter of turning the battery release handle on the side of the camera 90° counter clockwise then 90° clockwise and takes just two seconds until the camera is ready to use again.
- with the R5mk2 its crashing more or less on a regularly basis.. :-(
