"Who says that? Anything can be a useful utility in the right time and in the right hands for a specific purpose. Maybe one tool is useless to you, while useful to another. Some people might use it to store hundreds of keyfobs, so instead of carrying all the hardware for each, they can use one device instead. Others might use it to control their home devices, either the IR remotes, or other smart devices, and instead of having 15 remotes (I personally do), they can use one device. Some other person might use it to monitor their TPMS in the tires, others to monitor a serial GPIO port, and so on. All these are not only legal, but you can perform all the individual tasks with a “collection” of tools, like reading the serial GPIO, you can buy a dongle for $10, IR remote? You can use some android devices, etc. However, with flipper zero, it’s all-in-one."

Sure, you can make that point, but No Reasonable Person would accept it, which is where I draw the line.