Might more mean that we've standardised on a few things like what a byte even is.
The PDP-11 had both 8 and 9-bit bytes. Thats a complexity that few programmers have to touch on, today.
IIRC PDP-11 was a 16 bit word machine with an 8-bit byte. Maybe you remember PDP-10 with 4x9=36 bit words?
IIRC PDP-11 was a 16 bit word machine with an 8-bit byte. Maybe you remember PDP-10 with 4x9=36 bit words?