When I see this:
You must have Adobe Flash Player installed in order to view this site.
I read it as:
You must hamstring your computer with Adobe Flash Player in order to fully subject yourself to this abomination.
To be fair, it isn’t all Adobe’s fault. Much of it stems from years of having their platform abused by “web designers” who couldn’t tell Caslon from Comic Sans. However, it makes me happy to see such warnings less frequently.