Not really. FT processes operate at much lower temperature and pressure thresholds than what would exist deep beneath the earth.
They also generally rely on having some sort of hydrocarbon already present mixed with gases (co or co2), which would be hard to have in abundance within pressurized rock.
Abiotic production has as much evidence as fossil-pressure formation. Both are based on processes we can only guess at and cannot reproduce in a lab.
Aside from that: linguistically, fossil fuels is synonymous with petroleum products, even if you consider it imprecise.
But aren’t the processes hypothesized Fischer-Tropsch processes more or less?
Not really. FT processes operate at much lower temperature and pressure thresholds than what would exist deep beneath the earth.
They also generally rely on having some sort of hydrocarbon already present mixed with gases (co or co2), which would be hard to have in abundance within pressurized rock.