In August 2019, ~1600 places were up for rent in Dublin. In August 2020, it was double that. Mostly from tourist hotspots with AirBnB people trying to shift to long term lets. They're back on AirBnB now, and housing is even shittier than it was before. Yes, there's other issues, but AirBnB has been a known problem in Ireland since at least 2016 when I was first looking at places to rent in the country.

The government has said they're going to start tackling the issue of short term lets this month. I'll believe it when I see it.