

Any hidden screws or seams to pry? Is there alternative firmware for it?
If not, I’d imagine your only options would be physically crippling the bluetooth module, porting something like OpenWrt to it, or getting a router that doesn’t force Bluetooth on you.


Are you keen on using wireless headphones or speakers? If not, I’d go all the way for one without Bluetooth so the thought of present or future vulnerabilities won’t have to cross my mind whenever I use it.
In addition to the Bluetooth vulnerabilities other commenters have mentioned, a recent one affects headsets with Google’s Fast Pair feature. Once forcibly paired, an adversary can register the headset with their Google account. The headset thereafter pings nearby Android devices as part of the find lost devices network and can be used to track the victim.
Not sure if they are in production any more, but I can recommend the old iPod-looking Walkman and Sansa MP3 players. Currently also using a no-name iPod nano clone for the fact that it has a microSD slot, even upgraded the internal battery a few months ago.