You don’t have a problem if you never intentionally use the Z wave devices to cut current to the smart bulbs.
On the other hand, if you have a Z wave wall switch that you use all the time to control a ceiling fixture, and you put smart bulbs in that ceiling fixture, then you are in very real danger of damaging the radios in the smart bulbs and significantly reducing their Useful life. Which makes these very expensive bulbs even more expensive. Obviously, that’s a choice that some people will make, but you should know that you are making that choice when you do it.
What @aruffell has said is that even though he has the table lamp that has a Hue bulb in it plugged into a Z wave pocket socket, he never uses the pocket socket to turn the lamp on and off. it’s only there to make sure that if there is a power outage, the bulb stays off. You’re paying for an extra device, but you aren’t damaging the bulb.
As I said, different people will approach the situation differently, depending on their own priorities and their own budgets.
The user guides for the smart bulbs will all tell you that the bulbs should always be on power. So if you put a switch on the circuit that you never use to cut the power, OK, that’s your choice. It’s just preparation for a power outage that may never come. It does no additional damage to the bulb beyond what the power outage would do anyway.
But if you have a switch that controls the current to the smart bulb and you use that switch all the time as a regular wall switch, then you are in danger of damaging the bulbs. Which again, is your choice, but it’s certainly not best practices.