I read through their entire website. It'd be nice if they detailed or expressed what the ideal procedure would entail (waiting period, tests, consultations, etc). There's a big difference between having suicide booths (like in Futurama), where someone can just ctb at any moment, and having to go through an entire process that includes a waiting period/consultation/etc.
Also, they say they "strive for a society guided by facts and reason, not faith and superstition", yet that contradicts the foundation of their beliefs (which I'll explain). First, they are anti-natalist and sentiocentric, so they believe existence is the root of our problems and that humans should stop procreating. They go on to say "only in death will our problems be fixed." But that's the contradiction. Their foundation does not rely on "facts and reason." They are no different than the religious people who rely on "faith and superstition" that they themselves oppose. Why? Because nobody knows what the fuck happens when we die. There is no evidence or facts to tell us. So somebody who thinks they will meet God after death and somebody who thinks they will disappear after death are both relying on belief and assumptions, not facts. To claim death fixes all of our problems (when you have zero proof of what happens when we die) is a weak claim, but more importantly, is self-contradicting when you strive to rely on facts about the world and existence.
They are also assuming we did not exist before taking the form of a human. They don't believe in anything non-physical about existence. But again, there is no proof either way of this. They are relying on the opposition to prove their beliefs, which the opposition cannot prove, but that does not suddenly make their own beliefs true. It just brings everyone to an impasse where nobody can prove jack shit about the grand scheme of existence.
I consider myself pro-choice, but as you can tell, I have problems with these people's philosophy on life. To me, it's no different than religious people going around preaching about the afterlife. The reality is, none of us truly know, so stop acting like you know better than others just because you give them the burden of proof.