I've found that for for taking bursts of photos, I've given up on 20 fps because 1) I get too many photos afterwards (in the thousands) to wade through in post and the hobby isn't fun for me then, 2) I don't like losing 2 stops of DR when there are many times when I desperately need to pull detail out of shadows, 3) if I want to have a crazy high fps and can tolerate the loss of 2 stops then I'd rather just take an 8K raw video at 30fps which I can easily replay and focus on any snippets to pull a (almost FF) raw photo from, and 4) if I just want short bursts of FF raw photos I'll use the slowest fps setting so that the number I get in post is 2 to 3x less than 20fps and then it's not as daunting to wade through and I still get the max DR for pulling shadow detail. So EFCS in slowest FPS continuous mode is my default and I press & release the shutter quickly for single photos.
It sure would be nice if Canon would allow the user to set the fps they want for the various shutter modes.