Maybe it's just the UK, but I struggle to find any suitable physical switches that both look like a normal light switch but also function with smart devices.
I understand the benefits of some automation, but if there isn't a 'normal' switch that works completely 'as expected' for the family to use, it's not worth the trouble.
They aren't a traditional toggle switch, they have two buttons (on and off). Personally I find that to be an acceptable compromise and in terms of looks they are some of the best looking switches on the market smart or not. A lot of generic smart switches look like mass produced cheap junk. Lutron actually put a little bit of effort into the design which is nice.
If that toggling is okay with you, I've heard good things about Shelly which you can use to convert a regular switch to be smart. Otherwise I'm looking at GE Enbrighten switches which looks to keep the switch itself in a neutral position and have two buttons on the up and down rather than being an actual switchable switch.
This is why the conundrum exists and as such I would need to replace all switches with toggles, or distinct on/off buttons, so the family could easily manage.
However, they also need to work as non-smart/traditional lights if the network has failed, and I suspect this is a much harder problem to solve.