At least then there will be less lingering suspicion that he was pressured into it for being a cost point. And unlike in the usual AS hypotheticals, (but like most actual assisted suicides), he was perfectly capable of it. He didn't need assistance.
If you say, "my life is not worth living", maybe that's your call to make. But I think it would be very, very, wrong of me to answer, "Yes, your life is not worth living". Especially if I was your doctor.
Involving other people in your suicide, trying to get them to validate your decision, is deeply wrong. It's far worse than things like "emotional burden on your family" like suicidees are often accused of inflicting. It's no wonder that after this has been law for a while, doctor's moral sentiments are sufficiently sabotaged that they start encouraging it for people they see as a burden.