From those that are privacy conscious matter also has an issue that seems largely underreported. You can't choose which device on the network is the controller

From those that are privacy conscious matter also has an issue that seems largely underreported. You can't choose which device on the network is the controller when setting up a new device to a network. For instance if you have a home assistant blue it might choose your Amazon echo to initiate the network. Therefore you have multiple networks running which may not respect your privacy or choice.