I have 2 smart switches (phillips Hue Dimmer Switch) that are set to control specific sets of smart bulbs (e.g. 1 switch to control all lights for each room).
I think the smart switches are helpful complement to smart bulbs because smart bulbs require power to always be on to work (e.g. if someone flicks the regular wall switch off, you cannot then turn that smart bulb on with your app, voice, or smart switch.)
This is a big pain point for the adoption of smart bulbs, we're all trained to just switch the regular light switch on/off. For that reason I feel that smart switches are important part of connected lighting right now.
Honestly I feel like voice control is a big next step for lighting. I have a few Alexa Devices (including Eufy Genie) and I tend to just skip the regular existing light switches, wall switches, and the smart switches, and mostly control my lights with voice control via Alexa and/or siri.