The letsencrypt certbot package has been a snap for a long time. It's their recommended choice even on Debian https://certbot.eff.org/

Its a good opportunity to switch out certbot for something else, there are some great alternative options on github

Fan of https://github.com/dehydrated-io/dehydrated

No some server packages are snaps -- e.g. lxd

Yeah, lxd was the first one I noticed (with the implication that it's not likely to work on eg Debian - but rather be canonical-only thing).

I see juju is recommended to be installed via snap, and landscape is recommended to install via juju:

https://juju.is/docs/olm/installing-juju

https://discourse.ubuntu.com/t/landscape-beta-juju-installat...

https://ubuntu.com/blog/landscape-beta-test-the-landscape-se...

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