Currently there are many bounty hunters who only use a Newbie account. Which means they have created a new account, maybe not just one.
Lots of people who have multiple accounts.
better in the future, allowed to join the Bounty is a minimum Jr.Member account.
I also often find people who intentionally use my account username to follow the bounty.
Most of those types of newbies are bots with autoposting software connected with bitcointalk making bounty reports for social media especially. You can detect them easily - just watch those topics where bounty campaign has been closed and topic was not closed - you can see those guys posting reports over and over again.
And you are right.