Yes, the solicitor is wrong, but often solicitors err on the side of caution. The exemption from fees only relates to the Family Home and curtelige (generally garden and driveway). It often happens that extra land or commercial premises get included in the transfer, and the fee would become chargeable. The solicitor may be just pre-empting the possibility that fees may be requested, and including it in the estimate.
The copy folio fee is chargeable if you want a certified copy of the folio with a map attached. If you don't require a copy of the map, you can get a copy of the folio for 6 euros.