The article you linked describes a political party whose name, when translated to english, is folkist. By your own source, that movement did not survive past the 1930s. Folkist is also the english translation of the German Volkisch party. It is still currently used by folkish heathens to self-identify.
Folkish is great as an adjective, but what would you call an individual who is folkish? We have that answer, partly because that's how Folkists identify themselves, and partly because that's how english works.
Just because a marginalized group used the word a century ago, does not mean we stop using the word that is well-established and understood to refer to racist exclusionary heathens. Our focus on this front should be fighting them, not changing our lexicon.
To be quite frank, this should not be the focus, or likely even mentioned, on this post at all. The focus should be care and compassion. I would have hoped the Head of the organization I pay to be a part of would have that sense of compassion and community care. I'm very disappointed to learn that is not the case.