Version 5.4 no longer supported

[stevef]

From what I read on the internet there is Snap Firefox versus Deb Firefox for linux.

True enough - the deb is referenced in this thread.

In layman terms what is the difference between Snap and Deb versions ?

Different philosophies on how software should be packaged.

Why is snap version seen as a negative ?

The snap approach is not seen to be aligned with the open source model.
Requirement for the system to support another package manager.
Increased disk space requirement.
There are counter arguments of course.

Is there a thread on LinuxLite that answers these questions ?

No single thread as far as I know.