Permissive licenses are truer to the spirit of free software
Yeah, which is why the person who popularized the concept of Free Software invented copyleft -- oh wait.
"The spirit of Free Software" is freedom for the end user; as such, copyleft is much more truer to it. Remember, the whole thing started with the notion that Xerox shouldn't be able to stop you from fixing your fucking printer by withholding the source code to it.