No longer a question of whether or not *G are admitted to TAP-contracted lounges.
TAP has cancelled/not renewed (or is in the process of doing so) all lounge contracts. That at least is what they told me yesterday: but it's TAP, so expect some gap between what they say and what they do.
So Dublin is a lounge free zone for this *A carrier. It was joined a couple of weeks' back by Manchester, with it's two daily Lisbon flights, and where the contract with the lounge supplier has been pulled.
Seems to me incredibly misguided cheapness, even for a carrier focussed on becoming an LCC-manqué. The on-board service in narrow-body buiness-class is totally unimpressive, so I'm guessing those few passengers prepared to pay for premium class will start to drift away even faster.