Sooo you come to a site requiring flash with a add on flash blocker and complain it doesn't support you well... Maybe you're doing it wrong. If you can't get your own custom modules to work either don't use them or figure out how to use them better, don't get mad at someone else for not supporting your custom setup better.
I could turn off javascript and spend all day criticizing websites, I don't think any one would give too much care.
The only thing that's "broken" here is that the site redirects you before you have any chance to enable plugins for the page.
Your Javascript comparison is inaccurate, no one is demanding the site should work without Flash. If a site redirected you before you could click on noscript (or whatever Javascript blocker) to load all scripts, I bet you there would be a lot of complaints.
All flash blockers let you cherry pick which flash you want to unblock. This means you can unblock content, but keep spam or other cpu wasters blocked.
This website does not let me do that. It redirect to a different page, and forces me to white list everything. Something I rarely do.
I could turn off javascript and spend all day criticizing websites, I don't think any one would give too much care.