As for the longevity of the replacement lamp, it's a joke because I am 89 years old and don't expect to outlast almost any kind of lamp.
I have a 95 year old friend. When he was 93 he was talking about his expectations and I looked it up, the
average was only another three years. Well, that didn't cheer him up. But then I realized since he has no real illnesses, takes no medicine other than glaucoma drops and is still mobile, he is nowhere near
average. So he will probably live beyond 100!
More on topic, he drives me nuts sometimes with the way he insists on scavenging through his light bulb collection when he needs to replace a bulb. I have to unpack the entire box and describe every bulb and pack them away again. Oh, did I mention he lost sight in both eyes some five years ago? Yet he stays up somehow. He is in a great retirement community and his positive outlook gets huge positive reflections from the staff and neighbors. He has taught me a thing or two.
BTW, he used to design pumps, the kind you could stick your head in the discharge chute. He showed me a diagram of the nuclear plant he used to work in and taught me a couple of things I didn't know about pump design. He also is a militaria collector and has some very nice pieces.