One might have a right to fork source, while one might not have a right to mark and trade what was changed under the same trademark.
Similarly, a source license might require prominently disclosing changes made to source, such as redirecting an affiliate support stream from a trademark owner's account to one's own account, while it might be trademarks that decide whether one can still call this permissibly edited thing the same name or let users think it's the same thing.
To be clear, I have no idea what rights or agreements are at play in this particular situation, just noting these are not the same rights.
He mentioned "trademarks".
This phrase is messy: "forking WooCommerce".
There's a likely fracture between the two words.
One might have a right to fork source, while one might not have a right to mark and trade what was changed under the same trademark.
Similarly, a source license might require prominently disclosing changes made to source, such as redirecting an affiliate support stream from a trademark owner's account to one's own account, while it might be trademarks that decide whether one can still call this permissibly edited thing the same name or let users think it's the same thing.
To be clear, I have no idea what rights or agreements are at play in this particular situation, just noting these are not the same rights.