About the only reason I could think of to buy smart lightbulbs would be to suddenly turn all the lights in the house red, and yell "torpedoes in the water, brace for impact!" and that doesn't seem like a strong enough argument. I'd probably only do this 2-3 times a month anyway.
They become rapidly less useful when the toddler learns to say "hey Google" and decides to make all lights green all the time.
That's what I've done in our house. Lots of dimmers. Some are "rocker switches with a slide along the side," other are more digital "push button to turn lights on to the last setting, small rocker to adjust light level, you can always come up from 0 by using the rocker" types.
Or in another case, most of the lights are low in the living/play room, and I forgot to turn down the nursery lights, they're already winding down, walking up the dark stairs and into a dim nursery helps keep them chill. Walking into a blinding daylight blue room and then turning down the lights is liable to add an extra 20 minutes to our bedtime routine.
I will never not have voice activated lights so long as I can afford them.
I'll just note that most of what you complain about with dimmers isn't a problem with the correct dimmer - I don't have any dimmers that require coming to full brightness before dimming them down, no matter where they were last set.