Can that be worked around by having extra backups with only non executable files? Like txt, png, cpp (but without compiling and running)? I have a vague memory

Can that be worked around by having extra backups with only non executable files? Like txt, png, cpp (but without compiling and running)? I have a vague memory of ransomware that waited for one to mount external disks yes, but not as advanced as they ones you mentioned