I'm not asking for a philosophical proof of which terms are or aren't bad. I am proposing that rather than taking every single complaint seriously that we try to set some basic structure or benchmark.
I perceive that the current state of language-policing is anarchy: anybody can all anything bad/harmful/problematic/ism etc. Often a small group suddenly decides that their personal judgments on language should be followed by all, and it makes the remaining majority bristle, particularly if they try to enforce it without bothering to make a compelling case and win popular support.
I perceived this blog-post to be one piece of noise in this free-for-all.
Perhaps it's time for a better system than anarchy -- such as setting a standard (majority vote of the affected group?).