Today I would say that framing suicide as "immoral" in secular society is banal and has no traction, but most, excepting certain circumstances, would suggest it is a bad choice. That surely follows if you as well as I would try to talk an able person out of suicide.

I don't think it helps to diminish agency as though suicide is an inevitability following tough circumstances. That's the message I am getting from the euphemism treadmill game, and I reject it.

The message should be that you can go through hell and recover, and you still have a choice. And granted there's always nature vs nurture; just as we are not entirely the product of our environment, the environment does shape us. But it's not all-or-nothing.