Frequency I tend to agree with you. Dogs don't need to know their place, they need consistency and boundaries. Maybe the changes will go someway towards that. If OP and Partner have different rules then that causes confusion, which could manifest as a nervous aggression, caused by never being able to do the right thing.
My dogs sleep in my room, get fed before me etc My westie, major cutie pie that he is, went through a stage where he decided he wouldn't eat his dinner if I wasn't eating. He'd pick and graze, but would only settle to eat if I was eating.
OP, I'd see how the changes go with his behaviour. As @Frequency said, they're more about routine, which dogs like. If the aggression continues, seek the sort of person Frequency is describing. Don't wait it out thinking it will improve. First sign of aggression you need to be on it.
Don't get sucked in to Alpha / pack leader speak. My observations are it sets up an adversarial mind set. That shows in body language and a need to win mind set, thinking the dog is doing things on purpose etc. Instead, think of communication with your dog as letting him know what you would like him to do. Most dogs want to please. Training is the easiest way to help them with this. It puts in place boundaries. Instead of saying "no" to your dog, instead tell him what you want. Eg if he's jumping on you, No is meaningless. What you want is for him to either sit or drop. Tell him and then praise for being good, instead of "No, naughty dog for jumping."
Training is easily done at meal time. Sit before dish is put down, release word to eat, graduate to drop, then put down dish and add in stay etc All easy ways to start key responses with dinner as the immediate reward. My staffy pup could consistently do this at 4 months old with only meal time training.
None of this deals with aggression but, if you're going down the feeding time etc route, then it's very good training to introduce. Teaching your dog to wait for a command to eat is very helpful in stopping them eating things like baits, dropped medications etc