I also have the same issue with Adobe premier rush. I've just bought MacBook on m1 and it has big sur. Same importerquicktime.bundle. stops the opening process. I need to use the program ASAP, can you help???
as far as I know, NONE of the adobe programs are optimized for the M1 chip. They have to run in emulation which has issues. There may be a beta version available so worth checking in the creative cloud app