If you truly want to know what gaslighting is, watch the film, "Dangerous Crossing." That film is the definition of what, 'gaslighting,' is. It's a really good movie too.
Some one trying to convince you that moving to a new city with no friends, little money, and few resources, is not trying to, 'gaslight,' you. They are just giving you their opinion. They are naysayers at worst and concerned for your well being at best; and, realistically, perhaps both, to varying degrees.
What you are describing is more akin to the movie, "Tenacious D and the Pick of Desinty." The main character wants to, 'rock,' but his family, 'doesn't get it,' and, 'doesn't approve;' so he strikes out on his own to make a life for himself, on HIS terms. It's just naysayers, everyone has them...
As for the rest. No. Cults and propaganda are different phenomena. That's why there are words to describe them. I don't have a, 'stance,' for or against whatever you said being, 'gaslighting.' If you called an orange an apple, I'd tell you it's not an apple, it's an orange. It's not a matter of position, stance, or opinion. It's a matter of fact.
It's really not that deep of a subject. It's just the understanding of a word and it's meaning. Now, if enough people forget their history or are ignorant, the meaning of that word could change, because the majority will adopt a new meaning for it; but, I remember the meaning of that word, and I'm letting you know. heh.
Anyway, yeah, good luck.