According to the poll mentioned above, there is an increase of 9% in anti-EU feeling in Ireland. Not much, but following the general trend across Europe. This has absolutely nothing to do with Irish party politics
I'll give you a few starters
Blocking of UK owned covid vaccine exports from mainland EU to UK
Refusal to accept unprocessed UK shellfish even though they have been accepted for decades
Diversion and delay of perishable UK goods in transit to EU requiring products to be destroyed
Refusal to grant financial equivalence to UK banks and finance houses although reciprocal equivalence given by UK
Introduction of additional unnecessary paperwork to UK exports to EU
Threat by French trawlermen to blockade Channel Ports and actual blockade of Channel Islands
Threat to withdraw electricity supplies to Channel Islands
Warnings from EC re implementation of trade tariff and a "range of options" if UK fails to accept EU direction for goods moving from the mainland to NI
Application by EU of 20 times the border checks on goods moved to NI as to any other EU border
Triggering by EC of Article 16 of the Northern Ireland Protocol without consultation with UK or Ireland
All caused by brexit, own the mess you wanted.