No. Common travel area that predates EU.
The quarantine requirements set to try and prevent going over without a valid reason i.e for a pub visit etc.
Colleague who went over for work via ferry, checked by drug squad who sent a dog into car, no alcohol or drugs issues. He asked about quarantine, this in May but they indicated, "we not policing that we drugs squad but you here for work so assumme you know WTF you doing" and let him leave.
Many friends with family there and they pretty much state that family ask not to visit until safe, which they doing.
Aside from last couple of days where a localised test brought 80 cases the cases and more importantly deaths have been small for a month or so.
Difficult to stop people coming in and not self quarantining, seems in some popular tourist spots beloved by US visitors, they found themselves unwelcome unless they could prove in Ireland for 2+ weeks. May not do the Trip advisor ratings any good but seems owners figured least of their worries.