>>213515176There are still 200,000 fluent Irish speakers, and more that can speak it to lesser ability, so the language is very much alive, but it's just not thriving. The language has survived this far, into the digital age, and is well documented at this point so it will never go extinct.
Of course, it will never be revived to the extent of being our first language. English was in the right place at the right time by being lingua franca when the world became globalised. It's also the language of the USA, which doesn't look likely to lose its position as the world superpower any time soon given its military investment and dominance on cultural exports. There's too much inertia for English to lose its place as lingua franca by now. It's already our first language so there's no mechanism, practically speaking, by which it gets dethroned by Irish given its strengths. As time passes, we'll gradually see other smaller languages fall out of use in other countries. All we can do is preserve these so they can at least be kept alive in academic sense, even if not being used as vernacular.
There's still more to culture than just language and even then, the way that the average Irish person engages with the language (through school, going to the Gaeltacht in summer as a teenager, etc.) is still a shared experience that is unique to us. By definition, it can be considered Irish culture.