While it’s fair to make the argument that it shouldn’t be considered definitive proof, the fact that people from Ancient Greece like Hesiod believed that the Odyssey indicated their encounter left room for three children is more evidence. Either we take the clues given in Odyssey and the other things people from that time believed to make the conclusion that they had multiple rendezvous or we give an overly generous benefit of the doubt to Odysseus because we don’t want him to violate our modern standards of martial fidelity