Ofcourse it is!
Nowadays, I notice most of bounties have strick rules, making bounties more organize and I like that Bounty Manager requesting Proof of Authentication to limit scammer .
It's been one of major mistakes of bounty hunter like me not to read rules and requirements of each bounties ending up not getting stakes so it's very important to read and understand each rules to ensure that we're doing the right thing and not wasting our time and effort.
yes, that is very necessary.
that's why I got red trust. even though I don't know why, but this doesn't stop me from getting involved in the crypto industry. Keep in mind that other bounty hunters especially for beginners, there are many knowledge materials that you can get on this forum with lots of reading. because to get profit not just bounty.