The official source for all this is Oculus Chief Technology Officer John Carmack's keynote address at the Oculus Connect 6 (OC6) conference in 2019, talking about upgrading Quest from 72Hz to 90Hz for Oculus Link remote rendering: https://www.youtube.com/watch?v=PMIDaomx0GA&t=1h4m02s

By all accounts Oculus Quest is selling like hotcakes. If the sales exceed Oculus' estimates then they can easily put enough money into FCC re-certification because it will be amortized across of very large number of units. Oculus continually making every headset they make the best it can be (even after well after purchase) helps grow trust in the brand making people more likely to say "just buy Oculus" when recommending VR.

One thing that would help is to spread the word about Oculus Link (and help your friends and family get setup -- the USB2.0 cable that comes with the Quest is now supported!). We need Oculus usage statistics to show there is a market for the 90Hz change. If they do boost the display refresh rate, potentially we might need USB3.0/USB3.1 cables to handle the hugely increased bandwidth requirements without compression issues (see https://twitter.com/id_aa_carmack/status/1198350474526760961?lang=en).

Also spread the word of this UserVoice suggestion to all the Oculus Link users you know (online and offline)! Vote this suggestion all the way up to the top!