You should really not be afraid to hire/work with people who know things you don't. And, you will do well to actively solicit and consider their advice, not fight and disparage it.

You put your scenario in disparaging terms, but consider another way to look at it:

- They may well actually know better. Listen, ask questions and learn. - You say arguing, but you most definitely want people who think critically about literally everything. (You also need people who will get on board with the plan even thought they don't necessarily agree with all the details.)