Are pocket synthesizers a good introductions to digital music production?

Ive been wanting to dabble with digital music production. All software ive tried has so many menus and buttons and switches I get overwhelmed.

While looking up instruments on amazon I came across these pocket synthesizers called stylophones and similar like theremin that entry for about 40-50$.

These seem like cool little gadgets to toy around with and maybe get a foot in the door to learn how to do digital music production. Does anyone have experience with these things? Are they worth messing with?

I have an old mixer for my condenser microphone that plugs into laptop I think I can plug aux line in from these mini synths to the mixer.