I fully agree.
I don't ever tell my daughter "because I said so".
As a result, she doesn't accept this as an answer from others, like when her grandma says it to her.
I give her an elaborate explanation of why I believe my course of action to be correct. This also means that at this point I rarely have to explain myself to her anymore, she realises I think heavily about my actions and really have her best interest in mind, no "trust me bro" shit.