I suspect, in part, that this article and people pushing for a ban wouldn't have even noticed the Flipper Zero if it didn't look like a toy. The case design looks like some advanced Tamagotchi and places in a more accessible part of the lowest-common-denominator mind. If it looked like a raw PCB and wires, or some rats nest jumble of little components, it wouldn't catch their attention as much. There is a lot to be said about how we package our hack tools, and the second you move into "magic box go brrrrr" territory, suddenly it gets real to those outside technical circles.
Actually, there may be something here. Politicians seem to be blathering on about "prepackaged" hacking tools, and similar terms. They obviously aren't going to ban ICs, or breadboards, so in their minds I think it's all about "Tools that are designed for non-hackers to use, in ways we don't like".
Right or wrong re: Flipper's uses, the "just take this and go" is part of it.
I do wonder, right now lockpick tools are banned, unless you are a locksmith. I wonder if one day, you'll be charged with "hacking tools", because you have some hobby project in your backpack.
