Is YouTube Considered An "On Demand" Platform?

I’m thinking of joining Envato, but the licensing info is confusing. It says you can’t use items in any “on demand” servive.

Isn’t YouTube considered an “on demand” service?

Could I use Envato fonts in music videos on YouTube, Vimeo, Daily Motion, Vevo etc? I thought these were all “On Demand” platforms. Am I wrong?

Many people use those fonts in exactly the same use case. I’d say it’s ok, as that Elements license is very broad. “On demand” I think it’s more about physical products. Still would love to hear the official rule on this. Thanks!