I had this proof of concept for how to infest even well guarded VM-secured analysis centers to the point of taking them offline or making them my bitch on my PC
Good luck with that. I don't know if you watched Skyfall one too many times, but all of those centers are disconnected from the internet and run on their own network, precisely for this reason.
radio is as retro format like vinyl.
...which is still really popular. Vinyl manufacturers can't keep up with the demand of record sales.
2) It takes too long to make. You go and buy one in ten minutes.
Currently, printing is time consuming. But expect that to speed up in the not so distant future. I would not be surprised if you could print all the parts for a gun in less than an hour within a year or two. And legally buying a handgun in the store could take a few hours depending on your state's laws. Even with a concealed carry permit, I had to wait as they ran a background check on me and filled out paperwork. If I was planning to murder someone, a non-traceable single use printed weapon (that I can test to my heart's desire) printed in an hour or a day is still better than buying one on the street, let alone a legal one in a store. I would also consider printing my own light guns to keep in the glovebox, under my seat, at my desk, etc for self defense instead of buying one expensive heavy one and carrying everywhere. In short, if the technology keeps improving it could become a more common occurrence to see printed guns. A threat that requires special legislation? Maybe.