Probably not, but they said it did, so that's their problem.

Apparently the 'prime' in 'prime directive' just means 'this is the first one we thought of' and the 'directive' part of 'directive' means 'however you feel like interpreting it this week.'

For their internal politics, yes the PD applies. For general interaction, no, the PD no longer applies. You can also land on a pre-warp world if they're already buying Romulan Ale from the Ferengi. It's not like you can make it any worse once the cat's out of the bag. Consider that Kirk was sent to negotiate with the Organians back when they were thought to be a pre-industrial species; that was fine since they had already been contacted by some other people, including the Klingons.

Your comment has caused a schism in the planet's religion and now there is a faction that is building chairs with very high backs preventing individuals from raising their legs over them .... the schism is countered by another faction that teaches their followers to learn to do the splits and swing their legs over any chair ... this schism is countered again by another faction that lives in rooms with low ceilings and tight spaces to stop anyone from swinging their legs in any direction ... this schism is countered again by followers that learn to become contortionists that can swing their legs over any seat in any confined space ... this schism is countered by a group that swears off chairs and sitting on anything (they have short life spans as they die early due to deep vein thrombosis) .... 2,000 years after the Great Riker evangelized her gospel, chairs are now a controversial topic on the planet.