You can use sshd/sshfs to transfer files from a vm to another system, or even another vm.
You can shrink the installations partition to 90-95% used space, unmount the target, use dd --> tar.xz/lz/gz then the reverse to a new slightly larger partition, check enlarge whatever, configure, even the UUID of the partition transfers, so even grub.cfg/limine.cfg/lilo/syslinux all work just install in MBR or efi and reboot.
In all the years I've used the AUR I only heard of one pkg violating security, it was recognized pretty fast and was removed within hours from going up. AUR pkgs have history/track/votes on them, with thousands using them it is just as likely an official pkg having rogue code as an aur pkg.
Also, aur pkg are not really software written for the aur, it is software packaged for the arch ecosystem, and several other distros are using them.
@constantokra @pineapplelover