It is not a bug when recipe foo.bb doesn't generate foo.ipk. Your changes introduce needless churn and break upgrade paths only to cater to people making wrong assumptions.
Except on purpose to not generate recipe_name package, the other
situation is indeed a bug, such as
ssmping and pimd, it don't generate
any package at all.
If the "Your chagnes" means add checking about the non-create
package, I think you are right, many recipe don't want generate
recipe_name package on purpose, we should avoid that noisy
warning, maybe we should add a script to do that on the result of
world build.
But if the "Your chagnes" means the above fix, I think these fixes
is
reasonable for users, especially for newbies. (Actually the issues
were reported by our customer)