Yes, I'm trying to get clarification if Gordon thinks I have vacuum tubes in my signal chain . . . because I don't.
I wouldn't know whether or not you have them. It doesn't really matter.
The important thing is the soft/gentle/subtle types of distortion that they and the other things can add into the sound. All of those things have good simulations for some time.
This started mostly because I was trying to explain how/why not all distortion necessarily bad.