I for one, am against any camera modifications that would potentially compromise the excellent weather sealing of this camera. I am buying it as a stills shooter, and will probably do minimal video. I am a scenic and wildlife shooter who will unavoidably be out in rainy conditions on occasion, and I need the camera to be safe and reliable in those conditions.
From just the marketing standpoint, it seemed like common sense to me that a small mirrorless body that shoots basically state of the art video would not be designed to replace the much more expensive and video dedicated cameras that Canon sells, so once all the specs had been shown, it seemed obvious the camera would have time limits for shooting video, at least in all the modes that were high end or groundbreaking. And that is without even considering all the previous evidence of how this type of data processing generates heat that has been exposed in other previous cameras from other manufacturers that have exhibited these same heat mitigation issues to one degree or another.
I agree with a poster above - the specs and limitations are now pretty well known. The camera is a hybrid camera that has chosen to excel at stills, while offering groundbreaking video for limited duration applications only. if you need longer video you can either:
1) Add an external recorder to the R5 for video shooting if that cost and additional complexity work for you
2) Buy a video-centric camera like the A7S III instead of the R5 that is clearly designed as a video tool first, at the expense of a lot of things relating to stills.
3) Buy a full up dedicated video camera if your use case requires and you can afford it.
At this point no one is forcing you to buy and use an R5. Given the backlog of orders I dare say Canon will be alright without all the customers who now can see that this camera will not fulfill their needs. And there are other better options out there now (or very soon to be released) that will be better for the heavier video use cases that some potential customers say they require. I for one cannot wait for my R5 to arrive, and I very much look forward to some reviews by people who are intending to use it as a stills camera. For those other potential customers it seems to be time to move on to another product. The R5 would appear to be unsuitable for you.
ML