@manbeing --
The key word in the quote you referenced is "required". There are definitely circumstances in which a non-resident telecommuter is required to pay PA income tax. This Q&A from the Pennsylvania Dept of Revenue details the rules:
https://revenue-pa.custhelp.com/app/answers/detail/a_id/3599/~/how-are-telecommuters-wages-taxed-in-...
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
