We often look at things backwards.
HaSh-m, lechatchilah, WANTED us to eat matzah on Pesach, sooooo…
He created a scenario (the rush) where we would only be able to prepare matzah and not leavened bread.
WHY did He want, lechatchila, for us to eat matzah on Pesach?
Ahhhh… now we have to look into the really deeper kabala’dike (sod) reasons…