This seems akin to looking at someone's code and saying "This is crap! We should throw it out and rewrite it from scratch" without understanding how and why it

This seems akin to looking at someone's code and saying "This is crap! We should throw it out and rewrite it from scratch" without understanding how and why it got the way it did. See Chesterton's Fence: https://fs.blog/2020/03/chestertons-fence/ https://fs.blog/2020/03/chestertons-fence/