I would suggest that you need to look at context in order to determine whether a phrase is being used as a dogwhistle.
For example, if someone is also repeating other far-right propaganda (“fracking has solved the oil problem”), what are the chances that their use of this term is in good faith rather than as a dogwhistle?
Incidentally, are you claiming one of the above posters here has already included "other far-right propaganda" that tips the scales?
From my perspective, there's been some kind of false-alarm. The danger exists out there, but--unless there's some author reputation I'm unaware of--this isn't it.
Yes, the idea that the problem of “oil” (fossil fuels) has been “solved” by fracking. That’s another right-wing tell, because it ignores the broad environmental destruction caused by the use of fossil fuels and presumes that the only problem with them is scarcity.
For example, if someone is also repeating other far-right propaganda (“fracking has solved the oil problem”), what are the chances that their use of this term is in good faith rather than as a dogwhistle?