I'm no expert, but Google having designed AV1, I can certainly imagine a world where the codec infringes upon HEVC just enough that the lawsuit fees would come out in the wash.
The experts may be biased, but when they open the mouth and try to argue their position their bias becomes obvious for the other experts and it can be contradicted with logical arguments.
Unless all the experts work for an interested party, it would be very difficult to impose an incorrect verdict, because it is impossible to argue in its favor without the mistakes in the argument being immediately exposed by an interlocutor.
On the other hand, with a standard jury most people will be unable to see what is wrong in the arguments presented to them and they will not be able to distinguish truth from lies in such technical subjects.
The US elections and the elections in many other countries are an eloquent proof of the capacity of average people for distinguishing truth from lies concerning much simpler facts than the details of video compression patents. Expecting a jury to choose the right verdict in such a trial seems too optimistic.
Part of the idea with AV1 was that with the constituents also holding such a massive warchest of patents (plus big tech being richer than god), they would countersue and demolish anyone that tries to bully AV1 users. Which would act like deterrence.
Where is all that might? Was it all just saber rattling, and are they basically going to let the AVC / HEVC patent holders make a fool out of them?
If this will reach a trial, it remains to be seen whether Snap will fight alone or it will receive support.