"Then I ran the first shared bash script, so I immediately committed a crime"
Copyright doesn't usually do anything with the running of programs, but with
derivative works and the making of copies.
"I am also reading (and copy-pasting excerpts from) your automatically
non-free copyrighted forum posts without explicit permission (license)"
Reading a copyrighted work is not usually an infringing activity; see above.
Also, quoting people and re-using small portions is usually allowed as a fair
use exception to copyright in the U.S. and in the various laws of other
countries around the world. Details vary of course depending on the