simo simo.sorce@xsec.it writes:
You are confusing restrictions with requirements.
I thought about this but decided that the distinction isn't obvious, so even if the webpage is technically correct, it's still a poor choice of words or it needs to have the difference between restrictions and requirements explained.
My suggested new wording was:
Copylefted software is free software whose distribution terms do not let redistributors add any additional restrictions which would prevent recipients having the four freedoms or to make using those freedoms excessively inconvenient when they redistribute or modify the software.
Or:
Copylefted software is free software whose distribution terms do not let redistributors add any additional restrictions which would make the software non-free software when they redistribute or modify the software.