I can forgive the Grand's, they are pretty tasty, and homemade biscuits take a bit of work and experience.
It's just that sausage gravy is super easy to make from scratch and is far superior to any gravy mix.
Gravy:
Step 1: brown sausage in skillet
Step 2: add flour to sausage, enough to absorb the fat
Step 3: add milk (and optionally stock), then cook down until desired consistency.
Season to taste