Why? It’s not about ireland - it’s about scotland. Article makes complete sense in a scottish context.
And, the situation and standing of gaelic in Ireland and Scotland are quite different. In Ireland, gaelic is strongly associated with the primary, and successful ethnonationalist movement. In Scotland, at the end of the day gaelic is a remnant of a foreign invasion, and is also historically associated with catholicism, so is often seen as the “other”. This makes it more difficult to whip up enthusiasm to learn it, even among die hard Scottish nationalists. This whole situation is quite unlike Ireland and even Wales, it would be at best a distraction in the article.