It is amusing. The TNG PD seems to be a convergence of several influences to create something of a weird, unflattering muddle.
The big one being just stay out of other peoples problems/politics lest their problems becomes yours and you create a bigger mess.. Which is half observed but also much of Federation relationship building is based on sending Starship Z to help to steer asteroid X away from planet Y or repairing teutonic plates..etc.
The idea that the galaxy is basically a large nature reservation and if you save one species from extinction the idea being there's unintended consequences for their neighbours or whatever. Just as if you save - I dunno - a species of fox from dying out - repopulating that fox might accidentally cause it to multiply in numbers & upset other species. With TNG it just creates a hierarchy of races, valuing races on the unsatisfactory criteria of technological advancement.
I suppose there's also a deterministic thing that each civilisation comes to an end naturally and there you go.
If you are a member of the select few races, there's no thought of the PD though.
Kronos was all gung-ho to be salvaged via artificial means in TUC. Amusingly in that movie it's Kirk that recommends treating the Klingons with the TNG PD treatment with his "let them die" remark.