Hard coded results - accuracy

I've just come across this tool for finding harded refs, and it looks great.  Seems like it covers many scenarios.  Is there is any it misses?

Asking because I hadn't heard of this tool before and wondered why it isn't referenced in this doc

Updating Hard-Coded References (salesforce.com)

Instead of the Lightning readiness tool, which the doc warns is not accurate.  

Lightning Exp Configuration Converter seems a more robust option.