Correction: you bought a seriously expensive stills photography first camera that just happens to have the ability to record pretty high quality video, NOT a video first camera that just happens to record stills. If you intend to use this camera for video first, you shouldn’t be expecting reliable high end cinema performance in a stills camera form factor. That’s kind of like expecting C700 performance in the price and body of an EOS RP. ?!?! If you need reliable C700 performance, then use a C700, not the RP. I’m using C700/RP as an example.
in terms of how canon chose to market the R5, yes, it’s unfortunate that they are chose to market it as video first, however reviews are showing that it’s not that camera, at least not in current firmware form, so if anybody is stupid enough to buy anything based solely on manufacturers marketing (Not just Canon), then they kind of deserve to get what they get. This is why independent reviews exist.