As someone who plays exclusively bounty hunter let me put in my 2 cents.
As a bounty hunter, and say we are shit for arresting those who we are tracking despite having the exact same impact as us. Imagine just trying to hunt someone as a bounty hunter to pay the bills and you are constantly told you are shit because you play the game a bit differently, doesn't sound good, does it?
As to why we don't say much when we have you in our custody is for a few reasons I'll address most of them. Remember that we are 9/10 out-numbered, and we know it. We are constantly on the lookout for your teammates while we are escorting you from point a to point b because we know that if we get ambushed we will more than likely lose an hours worth of work we just got done with someone combat logging on us after an hours worth of work.
Imagine doing a coke run only for your coke to disappear when you got to drug dealer...sucks don't it? No imagine that 3x a day...
While I encourage RP bounty hunter has neither the time or the place for it. If I want to RP with you I will do it on cop where I have the security of backup.
TL;DR Bounty hunter has it better than ever but still gets the shit end of the stick. We are degraded for doing bounty hunter even though it is harder. We don't have to RP just like you don't RP when you drop 5 guys on my 1 hatchback sport with only me in it.