find ... | tr '\n' '\0' | xargs -0 ...
[public]
vfs objects = catia fruit streams_xattr
fruit:encoding = native
comment = Public share
path = /home/files
force user = files
force group = files
guest ok = yes
browseable = yes
read
create mask = 0644
directory mask = 0755
readdir_attr:aapl_max_access = no
Try reading some time. It's pretty great.
> the Ctrl+C handling is just utterly broken
That's your terminal, not parallel.
> and all of the delays
Your terminal is adding the delay, not parallel. parallel is just warning you about your broken terminal. You're shooting the messenger here.