AutoMod make blocking long messages easier.

Today, I figured out how block long messages using AutoMod (https://youtu.be/TOXEZaWdB1s)

However, I can only set this limit to 177 using this regex pattern: "[\S\s]{178,}"
Which is way too strict. If I try to set it any higher it says "Regular expression compile size exceeded limit".

Would it be a good idea to create something built-in for this? This is not a great solution.