Honestly, fruit kinda sucks, IMO, and yes you would need to add a lot of sugar to eat it because it’s not good by itself, why grow fruit that needs sugar? I guess some people enjoy grapefruit with a little sugar... I got a nice plant from Nate at Wildlands that fruited but no one liked it so it got donated to the compost bin.
I'm personally not a big fan of the fruit but know some who are. IMO I love growing things that dont meet my palette because they have different flavor profiles and notes and have potential for value added products! But I also get so many people that come knock on my door and ask me how I am growing papaya here