hmm, hard to say- in my mind, the reason he wrote the damn thing was because-
A)he wanted to prove soem obscure philosophical argument
B)The greek people may have been infatuated at the time with great cities taken by natural disasters because of Helice
now, if all of platos story is true- even how ye olde Solon went to egypt, and found out all this crap about atlantis, it still fits tartessos; because all of the egyptian records of tartessos are more or less connected with the descriptions of the sea peoples; whom obviouslly appeared to the ancient egyptians as if they ruled an empie going in Etruia in europe, and up to thier very border sof lybia in egypt, because of the apperent co-operation between the lybians, and the Sea peoples
thsi means that this par tof the story coudl very well be true, about solons venture to egypt, and the egyptian telling him this little story; of course, ther arny egy[tians records that we know of telling that the Mycenaeans had any hand in des[atcing the sea peoples, but then, that not exactley somthing you go put on your monumnets, how some other nation own a major victory who repulsed your current #1 enemy at one point; or perhaps the egyptians were just lyeing about Mycenaean Greeks driving out the Sea peoples...