Bagpuss
Legend
I'm not restricting anything.
Of course you aren't, it's just an expression of speech, that if you expect that I think you are asking for too much.
But generally, if you're designing a setting inspired by a historical period, you can and should absolutely deviate from history if you have good reasons. I just don't consider "Eh, couldn't be bothered to look too closely" a good reason.
And how do you intend to tell the difference between someone having good reason for leaving something out, and someone that can't be bothered?