It placed last out of a list of top brands because its customer experience score fell the most - down 17% - while its trust score plummeted - down a whopping 25%.
As the Irish Examiner notes, the poor performance followed the Ryan Tubridy pay scandal, but he is not the only factor cited by viewers as to why they dislike RTÉ.
The regular airing of repeats and problems with the RTÉ Player are some of the additional causes.
Ticketmaster, NCT, and Amazon were among the worst performers in the survey of nearly 150 brands conducted by Amarách Research on behalf of The CX Company, and all three saw a significant decline in their ranking.
Based on the most recent annual Irish Customer Experience (CX) report, which was released on World CX Day, Ireland's overall CX score increased this year by 4.9%, marking the largest increase since the survey's inception in 2015.
Supermarkets, pharmacies, and health insurance providers were among the top performers, with approximately 85% of all brands improving their score.
Credit unions are once again the clear winner, maintaining their dominance for an unprecedented ninth year in a row, increasing their CX score, and edging out their competitors.
Power City, which received the second-highest score for the staff's positive impact, has climbed into the top 10 this year for the first time, taking the third spot.
Smyths Toystore is in fourth place, and Specsavers is in fifth, both behind the business.
Others that did well were Laya Healthcare, which came in sixth, M&S Simply Food, which came in ninth, and Dunnes, which came in tenth.