The other thing that people do with long lines is that they try to combine a lot of statements per line. Then when that line has to be changed, it's harder to review in a diff (compared to the diff that affects a line containing a single statement).
This is one of those matter of opinion things. But it's so wildly one sided from my experience that I struggle to see the other side.
Similarly, one can combine several statements in code on a single line, but that, in my opinion, is harder to read compared to having a single statement per line and harder to read the resulting diff when changing something in the line.
This is one example I copied from bashoneliners.com:
man -k . | awk '{ print $1 " " $2 }' | dmenu -i -p man | awk '{ print $2 " " $1 }' | tr -d '()' | xargs man -t | ps2pdf - - | zathura -
man -k . \
awk '{ print $1 " " $2 }' \
dmenu -i -p man \
awk '{ print $2 " " $1 }' \
tr -d '()' \
xargs man -t \
ps2pdf - - \
zathura -