> cross-distribution repos are a juicer target for attackers than distribution-specific ones
Important note: don't mix up cause and effect here, but yes.
It is a lot of work to get a package into a distro, especially Debian. The distro will keep the source, build it, package it, and ship it. I am told it can take years, and developers often complain about distros shipping old versions. Even FOSS heroes like jwz:
https://www.jwz.org/blog/2016/04/i-would-like-debian-to-stop-shipping-xscreensaver/
This is one of Fedora's selling points: faster turnaround, new ver every 6mth, fresher packages.
But anyone can create an account on Snapcraft or Flathub, upload something, and if it passes the bots' checks, and maybe a human glances at the name and description and it looks OK, then it's published, much like a Facebook post.
(The Flatpak fundies will probably scream at me for this, as they did at Matthew.)
It's quick and it's easy and because stuff is sandboxed and isolated and all that, the evangelists think it's safe.
As Snap's fake crypto wallets have shown, it is not safe.
So, yes, IMHO, they _are_ more dangerous and if you are judiciously cautious and running production servers, you probably won't allow this stuff on your box.