The Fire Stick Max is working well with some restrictions.
It has a tendency to forget Bluetooth keyboards every week or so and they need to be reconnected manually. I find it much easier to search and control the device with a keyboard than with the included remote.
Alexa seems to search mainly in Amazons Prime Video but not in some other streaming services. That is where a keyboard would come in handy.
The remote is very cheaply made and opening the battery compartment might break it.
The audio setup is limited and the volume can only be controlled via IR on the TV or Receiver. It does not have an option to change the volume in the Fire Stick.