I don't like making gratuitous changes to code, even to code that I don't like. It clutters the source control history with useless entries, and it makes comparing branches more difficult than it otherwise would be.

However, a lot of code is written by somewhat blindly copying code that is already there. So, I would like that the code that gets copied to be the code that I like, rather than code that I don't like. So I'll be a little more likely to clean up code that I don't like if it is code that tends to get copied.