I noticed this early on when I noticed how often I changed the light bulb in the bathroom compared to the hallway where it was always on. Once I thought about it, I assumed it was due to thermal stress.
I got my soft-starter from amazon for €10.
The Casetas allow me to soft-start each bulb, and to run lights at less than full brightness most of the time.
It would have been interesting to see the effect on incandescent bulb life, but I also took the opportunity to replace all light bulbs with dimmable LCD, so the question is moot.
For LEDs the issue is the driver boards, they get crammed into the tiny socket and live a very, very hot life. Doesn't matter that the LED has 100000 hour lifespan or whatever they write on the box when the driver dies after 5000 hours.