You do seem to be using the term in a non-standard way. Here’s the first use of the term from Hanson’s original essay:
[...]there is a “Great Filter” along the path between simple dead stuff and explosive life.
The origin and evolution of life and intelligence are explicitly listed as possible filters; Hanson uses “Great Filter” to mean essentially “whatever the resolution to the Fermi Paradox is”. In my experience, this also seems to be the common usage of the term.
You do seem to be using the term in a non-standard way. Here’s the first use of the term from Hanson’s original essay:
The origin and evolution of life and intelligence are explicitly listed as possible filters; Hanson uses “Great Filter” to mean essentially “whatever the resolution to the Fermi Paradox is”. In my experience, this also seems to be the common usage of the term.