An infection implies invasion. Until GPL'ed code starts copying itself to your projects, it's not an infection.
As RMS himself said:
The GPL's domain does not spread by proximity or contact, only by deliberate
inclusion of GPL-covered code in your program. It spreads like a spider plant,
not like a virus.
it's generally accepted that the GPL has a viral nature
It's generally accepted after the smear campaign by GPL haters, just like the "General Public Virus" expression and the "cancer" remarks by Ballmer. It's still a pejorative and, in my opinion, defamatory term.
A willful infection is still an infection. Whereby an invsasion is always unwanted. You can't willfully invade your own code, but you can willfully infect it - whether that be with other code, or licenses.
As RMS himself said:
it's generally accepted that the GPL has a viral natureIt's generally accepted after the smear campaign by GPL haters, just like the "General Public Virus" expression and the "cancer" remarks by Ballmer. It's still a pejorative and, in my opinion, defamatory term.