I’m confused. What level were the African beads found in - Eighth century AD or 3000 years ago? The latter would be remarkable, the former sort of ho hum.
These African beads don’t mean the Irish were trading with N. Africa. It could mean merchants from Iberia brought them to Ireland to sell, trade, or give as gifts.
The beads could also have been captured from an enemy who happened to possess the beads, gained perhaps from sacking a palace or raiding the coasts of southern Britain, France, or northern Spain.
Now, if we found Irish trade goods in Morocco then yeah, a stronger case could be made for Ireland-N. Africa trade.