ABSOLUTELY! When I was a newhire 727 S/O 18 years ago, I was flying with a former PanAm captain. Somewhere in the conversation the phrase "threatened to write me up" or something like that was uttered. His reply was great, and spot on

"What is up with this toxic culture at Delta of always threatening to 'write you up?' At PanAm if you had a problem with a FA, mechanic, or gate agent, you went to your Professional Standards committee. They then contacted that employee's union Pro Stan committee and the vast majority of the time the issue was hashed out at that level. That had two benefits.

"1. It kept issues like that out of the chief pilots hair, and that of Inflight supervisor, etc. That freed up all their energies to worry about ops related issues, and not personal conflicts.

"2. It led to more honest airing of gripes between employees. As it is, at DAL, you either have to just take it and do a slow burn, or actually write someone up and understand that their job is literally on the line. Perhaps the personal conflict was real, and needed addressing. That doesn't mean that you want the employee fired--just talked to, etc. DAL doesn't give you the option of addressing an issue without putting someone's livelihood at stake."

That alone is why I would like to see unionized FAs.