I see iFixit[1] rates the storage swap for the M4 Mini as "moderate", I remember thinking that popping RAM in my old 2018 Intel Mini was harder than most laptop repairs I have done... I think I will probably settle for an external nVME enclosure when I get one.

1: https://www.ifixit.com/Guide/How+to+Replace+the+SSD+in+your+...