The newspaper advertisement is headed 'EVERYBODY SPEAKS IRISH EVERYDAY'.
To support that claim the advertisements give examples of words that have been borrowed from Irish into English, such as brogue (from the Irish brog, for shoe) and smithereens (from the Irish smidirini for fragments).
English has borrowed words from many other languages as well - the words cul-de-sac and parachute were borrowed from French, the word banana was borrowed from Portuguese, the word bungalow was borrowed from Urdu, the word karaoke was borrowed from Japanese, and the word assassin was borrowed from Persian,
I used to live in a cul-de-sac but that doesn't mean I speak French.
Many people live in a bungalow but that doesn't mean they speak Urdu.
I often enjoy eating a banana but that doesn't mean I speak Portuguese.
The core claim made in the Liofa advertisement is spurious and is simply nonsense.
Advertising should be legal, decent and honest. I would suggest that the Liofa advertisements are in fact disingenuous and misleading and therefore breach the requirement for honesty.
If we were to follow the logic of Liofa we would have to say ,'EVERYBODY SPEAKS LATIN, ULSTER-SCOTS, FRENCH, SPANISH, PORTUGUESE, URDU and ........ EVERYDAY' but then that wouldn't suit the Sinn Fein cultural agenda.
Finally, if the advertisements are intended to encourage a greater acceptance of the Irish language, they are certainly failing. I think they are actually many antagonising people who find it intrusive to have Irish language propaganda broadcast into their homes.