Choice is a good thing. Small communites are good. Decentralized is good because then big bullies can’t come in and take your community away. Small size and fragmentation are features, not bugs.
Would be nice if the Fediverse had more of that.
There are three or four different “Technology” communities. But there might as well just be one, it’s the same bubble in each of them.
Could well be, I’m sure there were lots of poisonings and whatnot that earlier forensic science misattributed to natural causes.
But it could also be that murderers are getting more savvy too. There have been so many CSI-style shows, police procedurals, and so forth that it doesn’t take a great genius to know how to make it a lot harder for police to identify you. Like, if you made an untraceable “ghost gun” to shoot someone with, don’t carry it around in your backpack for days after shooting the guy. Sheesh, basic stuff.