All the posters on here have excellent answers and here is mine.
I'm a US citizen and I am very much against red flag laws and fortunately, I don't live in a state that has implemented such laws (yet) and hopefully never. I think red flag laws are really just a poor attempt to appear to be helpful, but hide behind a fig leaf/cover for paternalistic interventions and infringment of civil rights under the guise of protection and wellbeing.
Nobody has mentioned this example yet, but suppose for the general populace (normies and non-suicidal people, similar like minded people), if there was certain laws hampering speech or what they could do because of "morals, or any other arbitrary thing (we don't like xyz speech or action)" and laws were made to curtail, limit, or impose restrictions and even enforced (moral, ethics police force), the populace would be taking to the streets and demanding their rights, and general unrest would follow! So yeah red flag laws are nothing more than an pretext and excuse wrapped under the wrapper of benevolence while paternalistically dictating what 'suicidal' people can/cannot do and treating them less than a human being.
Also, I am not a lawyer nor legal expert, but I know that things in the US constitution is considered the Bill of Rights and "shall not be infringed" is a part that I still stand by. This includes the 2nd amendment, the right to bear arms. I believe that any red flag laws are unconstitutional because they violate 'due process' (then again, a lot of people just look past due process and pretend it doesn't exist, even for suspected or accused subjects). Again, not a legal expert or lawyer, but that's my take on it.
As for whether I would continue to be suicidal, yes absolutely, because the conditions that cause my suicidality do NOT cease the moment an option to exit/find peace (through CTB'ing) is taken away. I would resort to other means if I didn't have a reliable method to check out. I definitely will say what I need to say to not have my rights infringed, even telling them what they want to hear ("No I am not suicidal, I'm doing okay, I'm fine, etc.") and be even more protective of what I do (which I've always been and I could never be too careful with my intentions). I don't consider my actions to be impulsive, especially if I made up my mind, continued to and sustained an unwavering wish to die, even if it was drawn out throughout years. I've been suicidal for about all of my adult life and that is not changing anytime soon, barring some exceptionally thing that solved ALL my problems that led to it (nearly zero chance for that in reality..). If I didn't have my reliable method, I would choose other methods and take the next more reliable means, and that is something that I don't want to do for obvious reasons (collateral damage, more brutal end, less reliability, etc.), so I'm protective of what I have.
I would say that I'm quite angry, but also really frustrated at the ignorance, hostility, and even aggressiveness that these people have towards believing that red flag laws work, they don't truly work and only serve to make themselves feel better about themselves and feeling that they 'saved someone', 'prevented suicide' (but only temporary - because the ones who really made up their mind will either try until they succeed, resorting to more desperate (and likely brutal) methods which may even involve unwilling participants, like other people, cops, and more), even though it only pushes the problem underground, did not solve the underlying problem. I suppose 'out of sight, out of mind', virtue signaling (I'm so great I prevented CTB said the forced-lifer, preventionist), etc.
Good discussion thread nevertheless.