I'll bite. I ship the Mailspring email app on Linux and I prefer Snaps as an application developer. The big win is that the snap system provides automatic updates for packaged apps. You publish the build on Snapcraft and 24 hours later everyone on all linux distros has it. I cannot understate how incredible that is as a developer. I used to burn a lot of time investigating issues that users reported on Linux only to find that they were running a version a year old because each update required them to visit the site, download the dpkg/rpm, and install it. I know I could set up an apt-server and whatever else to vend updates to the major linux distros, but we also ship on Mac and Windows and that's a lot of overhead.

The downside is that Snap-packaged apps don't always integrate correctly with the underlying system. For a while theme support was pretty broken. And subtle configuration options aren't always passed in. Worth it in my case though!