In my case, I needed something with high performance, since I need to apply this method many times, it would take up a significant chunk of processing time if it was too slow, so I opted for the fastest way possible by making a single purposed method for this task. I just simply don’t need a generalized walk method for this, I really needed a special purpose method that does it as fast as possible, that’s why I made it.
So in my special situations, the performance does make a big difference for something like this.
I think you could also write a code generator that writes special purpose code for parsing through syntax trees based on what operation it is, such as the linefilter method, then you can also gain performance.