I've gotten a cake into the oven while Dad was getting dressed, so he can't kibbitz.
When I bake, I do a modified clean-as-I-go. If all I'm dirtying are measuring cups and such, I wash them in the mixing bowl all together. This means they're dirty for 10 minutes max.
Dad believes the process has to be paused to individually wash each item immediately.
By my method, the kitchen is pristine within 5 minutes of the cake going in the oven, so I don't see his problem.