That’s not to say there isn’t outside influence - the Irish far-right are v influenced by similar movements internationally in general. Influential figures in the US and UK will jump on Irish stories/propaganda and promote, discuss and amplify them (some more so than others, like Tommy Robinson).

When this happens, it will naturally attract more users from outside of Ireland - that’s just kinda the way the internet works. I’d also bet good money that there are bot networks boosting tweets by influential Irish users (something I’ll be looking into in more detail).