Wikipedia's notability standard are much higher for blogs than for academic sources. (Mainstream journalism falls somewhere in between the two.) A concept might be cited on fifteen thousand blogs and still not be counted as 'noteworthy' to the same degree as a concept that's occurred in fifteen substantial academic texts. Citing published books, MIRI research papers, and use of concepts in mainstream journalism + academia is your best bet.

Also, err on the side of consolidating information into a single article (e.g., 'steel man' as a section of the 'straw man' article rather than as a stand-alone) and building a Redirect to the main page, rather than constructing separate articles for every little neologism.