That’s true, but it’s also important to clarify that if I understand it correctly, using Shizuku or wireless debugger mode is specifically dangerous on unknown networks, like public WiFi networks, where anyone could connect to your device with adb, but in case of use from a secure network such as your home (unless some device has been infected by some type of remote control virus) you can use it without problem.
I understand that most people will not mind leaving it on and their phone will automatically connect to any WiFi network, but in my case my device asks me every time I start the wireless debugger mode that if the network I'm connected is a secure network, and it only works if it's connected to this network.
I don’t know if you’re asking because of my recent post on fdroid@lemmy.ml, but if you’re worried that someone might put a virus or some kind of remote hack into your device, you have nothing to worry about or shouldn’t, as I said in a response to the post, unless you are connected to dubious or public WiFi where anyone can run adb, no one can do anything to you and I say this because at least on my device, my device only activates debugger mode if it is connected specifically to a network that I, the user, identify as safe, otherwise it cannot be activated.
Short Answer: No, you have nothing to worry about, just don’t tell your phone that any public network is trusty unless you’re connected to a VPN.