Even the 100MB/sec won’t work for long as these stupidly small MicroSDs tend to heat up A LOT and then go into throttling where the transfer rate goes down to <1MB/sec.

That and anecdotally, these high capacity SD cards seem to quickly reach the temperature of the sun during any kind of sustained large file transfer

I'd say it's perfect for security cams or any cams using compression. You could store 14 days of 5120x3200, 60 fps, H.256 HEVC video. Or ~1 day of that at 850 fps.

For a brief moment in my life I worked as data manager in a movie set, and remember studying for that job and having to talk with the DP and the cameraman about memory cards, recorders and checking with them that the quality output of the camera were not bigger that the speed capacity of the memory cards. It was fun times, and sometimes I wonder how my life would be now if I never left Argentina and had accepted the next gig the movie producer called me for.