A lot of users are seduced into running proprietary software, mostly at no
fault of their own. Gnash and Flash alternatives are listed as high-priority
projects for this reason.
I definitely have a lot of sympathy for Gumboman. I consider myself lucky
because I uninstalled Flash over a year ago (while I was still using Windows)
and I'm lucky because I never had a school that used it.
For YouTube, you can also use youtube-dl to watch without the non-free
ActionScript.
Gumboman: many other devices, especially mobile devices, don't support Flash.
If you do complain, I would recommend mentioning this. I would also recommend
mentioning that Flash uses mostly secret/proprietary formats.
You shouldn't have to agree to a EULA belonging to a company for any
education either.
Best of luck, whatever you do.
