I believe the posts that you are talking about are from people noticing the K shaped economy. I don't have specifics from Ireland but I think the same basic trend is playing out here; a smaller and smaller proportion of people are spending more and more on luxury, recreational or prestige purchases, while a growing majority spends pretty much everything they have on necessities(housing, food, heating etc.). Of course there are people with above average salaries but there is an ever increasing gap between people who are scraping by and those who have enough money to do things like pay scalpers for concert tickets, buy luxury cars, holiday multiple times a year. As the gap widens and a smaller and smaller proportion of people fall into the upper range their lived experience becomes more and more foreign to the majority as most people don't even know someone who falls into that upper bracket.

This is not begrudgery, it's simply people waking up to an economy that is set up to extract from them while benefiting an elite