People hated the seedy variants. It was more seeds than fruit and messy to eat. Note: you could not eat the seeds it seems (large and hard)
I do remember eating bananas where the seeds where all about 0.3 mm to 0.5 mm.
If you see a viable seed it's going to be quite large, looking like 5-10 mm each: https://www.quora.com/Diploid-bananas-have-seeds-How-many-se...