I don't think I'm picking and choosing any more than anyone else, and I wasn't using that link to say 'see the camera is fine for all wedding photographers' just that someone understood the limits and worked within them. The real problem here is the subjectivity of what is "ok" for the R5 and what the camera is designed for. Its weather sealed, strong IBIS, tiny body, powerful AF and processing, high MP- all things that will equal heat and there has to be a compromise somewhere. Canon marketing was quite sloppy but to me it is still ridiculous to expect any product to do more than a manufacturer says it can do on the spec. sheet. Not what we wish it to do, but with what it was designed for and can do. Canon told us what it can do fairly clearly, and it does it. I think perhaps people disagree that they told us enough. Perhaps they needed even more language to define the overheating situation like "previous heating from environment or use may cause further limitations of HQ video modes"?
I didn't post that video link and say because one guy made a wedding video with the 8K successfully that it was fine as a dedicated wedding or video workhorse for pro video use, we know it has limits. I simply was trying to show an example of someone who proved it can be used with knowledge of those limits where many of the reviews and negative comments are concluding it is a useless camera because of the limits and could never be used professionally. I am pretty sure he also said low res modes and stills were still available, so to me he hit the described limits, and still had a camera.
I agree that reports of the camera heating up just idling or taking stills before video has begun are concerning and if those remove the HQ video features it may be a problem, but I also have not experienced that with mine. Heating it in the sun does eventually get it hot enough to limit those HQ features, but we're talking about a long soak in the sun. I did a fairly thorough overheat test at 85°F in direct sun for what I think was reasonable use: 30 mins of 4K60, then a bunch of lower res use and stills for 60 mins, then more 4K60. When my unit did shut down, I could still use it for low res and stills. 20-30 mins in AC and I could get more 4K60. So at what point is the camera good enough to not be a failure? I think Canon can and should investigate and make this better if possible, absolutely. They should also adjust their future marketing and be more careful there. I just don't see the controversy or harsh judgement adds up if this is essentially the mirrorless 5D5.