Even those of us that are pretty active on here rarely get beta firmware. And usually it involves a long signup process and selection process for testing beta firmware.
The times it isn't is if someone is working with L2/L3 support because they have a potential issue and a new firmware "might" fix it. So they'll sometimes give it to that specific user under NDA to try.
It used to be more active with beta testing firmwares on here but that was before the Arlo split when a lot of the forum/beta staff were moved
