This is not true. After having a lot of trouble downloading due to slow speeds, videos that the title displayed and the video ended and videos displaying side by side on my Quest, I got a popup that stated I reached my Service Level Agreement and would not be able to download more for 48 hours.
I bought access and put up with the poor download experience because at least I could retry as I read this response that downloads were unlimited.
The popup suggested I use the SLR viewer and browse online even though I am unable to get the viewer to load on the Quest.
For what its worth.