Sentret thinks it's because they are too legendary and then think themselves above being in egg shell thingies.
if misty is ashs mate , why does she think your a bastard in gold/silver?
Sentret hasn't ever been thinking that you are actually Ash!!! You meet Ash in Mt Silver Gold place thingy, and you are someone else!! Oooh, ooh, another cool section. Look at Gold, Silver and Crystal !!! Isn't that kewl???