He is absolutely right. Before they introduced low corporate tax, much of their well educated workforce left to pursue their carrers elsewhere, the low tax rate brought capital and employers to Ireland so the brain drain was reduced so the country benefitted more. As with any supply side reform of this type, you don’t determine who comes, but whilst some employers will go if offered better incentives others will stay.
How a low rate fits in with the expected economic integration within the Euro currency area is another matter.