I can try the export on my M1 Max MacBook Pro, see if it comes out the same. For this one I exported on my work Mac, which is a 2019 MacBook Pro.
I renamed the .mov to be .mp4. Macs don’t care about the name, but PCs often prefer .mp4 over .mov. It’s still the same H.264 video.
Useful to know, thanks… 
I’m struggling to see how this is a hardware issue if the codecs are the same and SKP are the same… isn’t SKP essentially exporting image file after image file and they get seamlessly made into the animation?
But - I’ve often done the ‘export higher, downsample in QT’ routine and it works. You can play with the profiles and depth cues - often bumping them up a bit in thickness to see how they look after sizing down.
Are you happy with the JPG or PNG exports? You could get really tedious and have SKP export out hundreds or thousands of still images and then use QuickTime Player to assemble them into a movie.
Some exporters do use the GPU to get the compression done quicker. I don’t think SketchUp does that.
I did an export from my M1 Mac, and the exported file was the same appearance as the one I did earlier. Strangely, it was a slightly bigger file size.
But, one thing did occur to me. There is an issue on M1 machines, where if you have use fast feedback turned on, antialiasing can cause bad artifacts. SketchUp works around that by setting the antialiasing to 0x if you do want use fast feedback. To get the same looking export on M1 you would want to turn off use fast feedback, then you can set 4x antialiasing.
Yr welcome. We made do with su animations for years, and that was fine. Anyway, others seem to have found the answers for making that possible for you.
Good luck