Strictly a personal choice. There is no value or harm to the plant. Some gardeners trim them down in the fall. Some leave them for spring cleanup. Q. Some of my hostas have more flowers than others.
Some varieties bloom more than others.
It's a part of their genetics. Also, location and age are a factor. Mature plants will produce more flowers. Some direct sunlight also improves flowering. Always a good idea and especially for hostas that have been recently planted.