People will still use modern English, and it may become simplistic even more with time, they aren't going to use old English just becuase it sounds better. All spoken languages (different as just reasig languages as Latin) tends to shorten and become more simplistc with time as it is used in conversation, and so grammar with time must agree and accept what is socially accepted not the inverse. I do not think it is a matter of Yehuborim corruption, this is social motion. Shakespeare would also find lazy nowdays english even if it's totally in agreement with nowdays grammar rules.Today nobody say "thou" but "you", and with time the way to write it may become "u". Same for other languages, for Portuguese as example, in imperial times portuguese word for "you" was "vossa merce", then it became "vos mice", today it is "voce" and with time will be accepted in grammar just "ce", as it is spoken today.