I wouldn't classify that as wholly accurate. Yes there is a substantial rural community but that's quite true for lots of Ireland. Letterkenny in Donegal has a sizeable tech sector for a small place although one with an unfortunate road network far too small for the traffic it gets. Internet was pretty standard when I lived there, nothing to write home about but not slow. Amenities aren't going to be extensive of course so if you're used to a city you'd find it sparse.
The other aspect is, while Donegal is more remote to the rest of the Republic, Derry in Northern Ireland is a city right beside it and is generally considered part of the overall area. North west that is, it's not within Donegal itself.
The other aspect is, while Donegal is more remote to the rest of the Republic, Derry in Northern Ireland is a city right beside it and is generally considered part of the overall area. North west that is, it's not within Donegal itself.
I can't speak for the islands though.