Let's be clear about what the issues with the R5 are.
- The camera overheats. Or, it has thermal protection that will disable certain modes in the camera that will prevent it from overheating and damaging the camera. Canon has published estimated recording times before it becomes throttled. This is not an unreasonable limitation as most Cameras will overheat after a period of time.
- The camera will not overheat taking stills. There are a couple of extreme case reports that the camera actually shut down after just shooting stills. However there is overwhelming evidence and reports that the camera will not overheat just shooting stills. We can take those extreme cases as outliers.
- The camera will build up heat that may limit anything above 4K30P. If you shoot stills, review images or footage, or shoot in 4K30P Normal mode and below, then switch to a higher quality mode, the allowable time for recording may be reduced. The reports for this issue are varied. We can conclude that the wide variety of usages and environments will all contribute to very different results for each user. The fact that we cannot expect any form of consistency at the higher quality video recording modes is an issue. Users will need to determine for themselves if their specific use case will make the R5 a feasible tool for them or not. If the performance does not meet their workflow requirements, they should provide this feedback to Canon.
- The diminishing recording times after successive cool down recovery periods is an issue. Canon has been up front about this, but it's not a practical workflow for any user to have less and less recording times after waiting for the Camera to cool down. If it had a published cool down period that allowed the user to have the max available time again, that might be acceptable. But to expect someone to record for 30 minutes until the camera shuts down, wait 10 minutes to cool down, then only get 3 minutes of shooting time is not reasonable. Consumers should take Canon to task for these weird recovery periods. Also, there have been varying reports for the amount of time that has had to pass for the Camera to complete cooldown, where allowable recording periods have returned to maximum. This is also an issue.
- If you can accept 4K30/24P in non-oversampled mode and below, or using an external Recorder on everything up to 4K60p, the camera will not have any overheating issues in most normal uses.
- The Lack of 120FPS in 1080p is an issue. There is no reason why this should have been withheld. This is like removing 24 FPS all over again.
- UWA IBIS Wobbles is an issue. I am not entirely clear on the specifics of the issue. But it needs to be clear if the lens firmware update addresses this. If not, it sounds like it was not an issue on EOS R/RP, so the culprit is the IBIS. It seems like you either get the combination of Lens IS & IBIS or nothing at all. If Lens IS did not have this wobble issue, then they need to allow the option to disable IBIS only and still allow Lens IS and/or EIS.
I don't really care about the outrage being spewed as if some have been personally offended. Some have had some incredibly unrealistic expectations about this camera. But Canon should definitely be taken to task on issues that are just simply impractical or not usable. I'm still patiently waiting for my R5 and know that I will make it work. I will simply find workarounds, or not use features if they are unusable. On the other hand, while I don't think whining and crying is productive, I do think constructive feedback should be given to Canon so they can address these issues. If they can take care of them with firmware updates, then great. If not, then at the very least it will be on the radar for future cameras.