With the introduction of Matter, Philips Hue wants to finally change the course here sometime in spring, the story should be settled anyway. Perhaps they are already the harbingers. In the Alexa app, switches from Philips Hue are currently showing up, at least for the first time.
So if you take a look at the devices section of the Alexa app and are surprised that suddenly numerous new devices have been found, then these could be accessories such as the Philips Hue dimmer switch or the Hue Tap Dial Switch.
But there is some bad news at the same time: At least in my Alexa app, the Hue switches cannot yet be used in combination with routines.
If this were possible, it would not only be possible to configure a Hue switch via the Hue app, but also to start routines in Alexa. Of course, this would provide numerous new options in one fell swoop – after all, the selection of Alexa-compatible smart home products is truly enormous.