Maybe. I haven't looked at the science regarding euthanasia and lower suicide rates. What I've read is that suicide is on the rise. But AN is not about suicide. Some AN's are suicidal. But some are not. Schopenhauer, Zapffe, Benatar, & others are not suicidal
I would hazard a guess that natalists are more suicidal that antinatalists, in general. But maybe not. I'm not sure how to do the math for that sort of thing. Or if the data is even available.
Most of the people that I have read about who suicided had kids. That's all. Think of famous people who've suicided. Most had kids. Kurt Cobain, Hunter Thompson, Robin Williams, Ernest Hemingway, Anthony Bourdain, and on and on...