Here's an article from a Scottish person talking about this exact issue, and you can find many more examples from other people over the years about how American fantasy authors bastardize their languages and cultures. Scottish Gaelic and Irish are both considered indigenous, minority languages, so it's even more insulting for it to be appropriated like this https://www.themarysue.com/scottish-reader-calls-out-authors-who-use-gaelic-incorrectly-to-spice-up-fantasy/

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