It seems to me that if the only basis for a profile is the Ynglinga saga, then one ought to stick only with information that can be documented from the Ynglinga saga.
We still have too many profiles born of the assumption that if there was an Yngvar Eyesteinsson, then there must have been a Mrs. Yngvar Eyesteinsson, and so you end up with female profiles with male names, no supporting information, and only a "Mrs." in the title frame as a clue to what is going on.
There was another G2G discussion on what to do with these profiles which will most likely never be filled out with real information. While deleting profiles is against Wikitree policy, I think mention was made of a special process the Leaders have for doing just that in select cases. Perhaps a Leader could chime in at this point?