Integrating a non-replaceable lamp is the trend. You buy the whole unit, it works for say, ten years and then you buy a different one when remodelling. This made no sense when a light bulb was just something that needs replacing every few months in normal use but LEDs mean you can engineer that out.

Replacing a "light bulb" will seem as weird as replacing the backlight inside your laptop. Obviously a technician can do it, might even make sense to pay for that rather than buy a replacement for the whole unit, but it's not something regular people do themselves.