Is there a tutorial on troubleshooting non-functioning sites?

[neverwasinparis]

some years ago I used Sidkis config for a while. changed to another config 'cause of the large amount of problems.
I think only very few users report problems, mostly will stop using this config or set it to bypass. bypass is a no-go for me. and it's not fluffy if you have to care about Proxomitron while surfing the web.

if a config is flawed it needs to be fixed. the only person I see who tries to do something with Sidkis config is JJoe. but it's mostly (always?) only fixing the symptoms/adding more and more exceptions/entries. so my question is: why not fixing the causes/filter?