My grandmother, neighbor, and great aunt all have wild avocado trees and with all of them the seeds are extremely large. I had always been told the cultivated ones’ seeds had been on-purposely shrunk to have more meat on the inside. This makes more sense because why would the gov want less food for a bigger seed that can’t even be planted?
Our avocados from there are very good, organic, and are not bitter. I am sure they were not cultivated because they were thrown out by another wild avocado tree.