Why would you think that people who have the courage to act on their principles would regret it?
The amount of self determination it must take to smell the gasoline and still strike the match makes me think that the people who do this are capable of living with the consequences of their actions.
I think someone who has the self determination to go ahead with this expects to not survive. Doing it and unexpectedly surviving and having to live a likely painful rest of your life is different.
I don't think it's realistic to assume you understand the mental state of someone who's already proved they are capable of setting themselves on fire to make a point.
I've not heard any reporting say this. I've seen internet commenters presume this, but just because someone engaged in an action that could result in their death, doesn't mean they're suicidal.
Starting ones self on fire is a suicide attempt, regardless of political motive. This isn’t the same as sky diving or even trying to see the Titanic in a carbon fiber pod, this is pure and simple, self immolation to death that failed, so far.
You are technically correct, which I hear is the best kind. Equating this individuals self-immolation to draw attention to and emphasize the situation in Gaza to someone who is struggling with mental health is disingenuous.