[SimonAce]

Dazzler carbies of a sort exist now. The Chinese ZM-87 and there are others including street variations called bedazzlers

They seem to end up causing permanent blindness which is considered a war crime and against treaty or in the case of civilian dazzlers not be especially effective.

Might as well deploy a high lumen flashlight which has more uses

In a pure TL9 setting, common countermeasures make them mainly an anti civilian weapon for riot control or suppression duty

As such PC's who usually aren't playing riot cops or enforcer types won't get much use from them or stunners of any sort.

A lot of this is highly setting specific, in a real world TL9 developed nations a trending to very old population and heavy automation with extreme levels of surveillance.

Using Germany as an example the median age by 2050 would be 50 years old Basically the demography of a retirement colony

The US would be a bit younger but not by much , maybe later 40's so modern Florida or younger

This suggests little crime where such weapons would be useful and PC's would probably never need them.

Other settings may very quite a bit but TL;DR these are basically setting specific weapons