With *ubuntu 22.04 Firefox will be installed as a snap. The current version of KDE Neon doesn't use the Firefox Snap.
I was hoping I could stay away from Snap if possible.

Are there any plans to move to Firefox Snap for KDE Neon as well?

Since Neon only deals with packaging Plasma and doesn't really develop things for the underlying Ubuntu OS, it is pretty safe to assume that Firefox will be a Snap.

There are different ways of dealing with this, however, if one chooses to.

Thank you for the feedback. I was afraid so. I hoped that KDE Neon might stick to Debian in this case.

I'm aware that I could stick to the precompiled version provided by Mozilla, instead of using the Snap provided via the *ubuntu/kde neon repositories. What other approach would you see?

That's disappointing to hear. I feel Chromium via snap is not very stable as it needs to be restarted frequently because it goes haywire after a very short time. Fortunately this isn't a big deal as I only use it for a few sites as Firefox is my primary browser. The Strawberry media player was also unstable via snap that I finally installed it directly and it has been rock stable since. I guess I'll have to do the same thing with Firefox if it proves to be unstable via snap.

Using Ubuntu 22.04, I have found the snap version of Firefox to be unstable, with some quirky behaviour. I've moved over to opera for now.

What a pity!
I would change the OS I've had for years because that reason.

You can disable snap and try with:
https://launchpad.net/~mozillateam/+archive/ubuntu/ppa

What about Flatpak? I'm using Flatpak versions for almost all my installed applications. Everything is working very well.

If Firefox comes as a Snap, i'll just uninstall it and use the Flatpak version instead.

I personally use the stable Firefox version for my neon downloaded from Firefox official site. It is a tar.bz2 package and I receive updates when released instead of having to wait for "official ubuntu" versions. I have done this for 5 years now and have had 0 issues. I also remove any leftover traces of the "official" versions using apt autoremove --purge commands.