Just to make it clear: there is no good evidence that anyone named Moses was in Egypt, that Jews were enslaved there, or that anyone parted the Red Sea. Any attempt to link events that likely did not happen with the Santorini/Thira/Thera eruption is wild speculation that cannot be regarded with any credibility.

The effort to link coastal flooding in Australia with indigenous oral tradition is intriguing and may be a fair call. On the whole, however, oral traditions are not reliable when it comes to retaining memories of events that occurred thousands of years before. Even if there were folkloric echoes of this sort, they would have been so completely mutated with the passage of time that linking them to actual events is speculative. I caution against embracing these sorts of speculations. They are fun to consider, but we cannot take them to the bank. Just because it "is said" that something is linked doesn't mean it is.