I'll be honest, I have more respect for the term gaslighting than I do 'boundaries', if only because I've seen more cases of the former.
The former gets abused online to basically say "people I don't like" but has a very specific type of scenario where it fits. If someone is trying to make you think you're the abusive one while you're crying in front of them and starting to question whether they have mentally been poking at you for the past hour/week/month when they obviously have, that's gaslighting. The only way gaslighting even works if the other person has no idea what the fuck it is or how to combat it due to their psyche being fucked by their abuser. Not when it's a dyke who had to hear reality for the first time in a month.
But boundaries to me is just one of those that bothers me on another level because most of the people I've met who've said it are mostly narcissists.
Sorry, but I am not a therapist. There are things that I cannot fix.
I know this might not be you, but I also think that goes along with the term and is why I hate it.
To me boundaries are one of those things you should put up, as I've had to several times with shitty people. But it's something you do, not something you tell someone or others constantly that you're doing to show how enlightened you are. It's like "toxic". It's a thing that exists but it probably results in a child getting aids somewhere in the world whenever the word is said out loud.
No, you're not a therapist. You're their friend/family or another human coexisting in polite society. You do have a moral obligation to be there for people mentally/physically on some level. And telling someone who you are supposed to care about to go in debt for a quack who you know probably isn't going to help them that much either does not serve a purpose. Human beings need companionship that they don't have to pay for.
There are obvious examples of bitches who cover their sociopathy as depression and I've met several of them. You don't set up boundaries, though. You just call them a cunt, hand them a rope and hope they know how to tie it.
Sorry, I know I might be coming across as an asshole right now and I know that you're probably not the strawman I'm thinking of, so I'm sperging. It's just I've met a dude who said "your happiness isn't my problem", who by proxy was a government assisted asshole who literally needed other peoples' kindness in order to survive. So I get a little assmad when I hear others say similar things anymore.