No more 3 block iron golem farming

I think this suggestion would make it a little more challenging to defeat the iron golem. I've seen speed runners, and a bunch of Minecraft content creators stack up three blocks and kill the iron golem with ease. To change this, I propose that Iron golem is able to destroy certain blocks when trying to get to the player. Of course, there are blocks that the iron golem wouldn't be able to break like obsidian or something similar but besides that it will be able to break almost any block. The Iron golem could break up to a 3x3 wall at a time or something similar. I haven't seen anyone else post this on posts but if someone else has I'm sorry for wasting your time.