I don’t think so, Mint have generally been pretty good about avoiding some of Canonical’s sillier decisions, and as of 2020 snap is disabled in Mint by default. (I assume it still is, if not I’m sure someone will correct me.) They also seem to be pretty critical of the direction snaps are taking in general:

as you install APT updates, Snap becomes a requirement for you to continue to use Chromium and installs itself behind your back. This breaks one of the major worries many people had when Snap was announced and a promise from its developers that it would never replace APT.

A self-installing Snap Store which overwrites part of our APT package base is a complete NO NO. It’s something we have to stop and it could mean the end of Chromium updates and access to the snap store in Linux Mint.

The Linux Mint team actually compiles Chromium themself for their distro editions, I suspect they will do this for Firefox too in the future (since Canonical only provide these as Snaps)
But compiling web browser takes a huge toll on hardware, so I recommend anyone donating if you wish for them to handle the server cost so the Linux Mint team can handle the slack of Canonical

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