Waste of space??

I hate to say it but my blueberries thrive, I have sowed them only in ericaceous compost plus periodic doses of coffee grinds, granulated seaweed, and occasional liquid feeds of seaweed. I’m looking forward next year to hopefully some pink lemonade blueberries on the Bush I planted this year. I will say all 6 bushes are different types, and the 4 that were fruiting this year 2 had lovely big juicy berries and the other 2 were mainly small berries of which 1 was sweet and the other slightly bitter.