I'm not sure your approach is really "all or nothing." My understanding is that lots of things result in the release of dopamine. Eating food that you enjoy (not just junk food) releases dopamine. Exercise releases dopamine. I would guess that enjoying good times with your friends can release dopamine, as I think I read somewhere that laughter releases dopamine. Perhaps even having success at work on a project can result in a release of dopamine. So I don't think it is even possible to go for, say 90 days, without any releases of dopamine.
I guess there might be certain non-sexual things, like playing video games, or gambling (or drugs) that might result in large releases of dopamine (maybe that's what you mean by "spike"), or other activities that might be avoided from a health standpoint (e.g., eating junk food) that might be beneficial to the rebooting process for some. But I don't think one can avoid releases of dopamine altogether, and I'm not sure it would even be healthy to try to do this. Indeed, judging from the comments of many on this forum, I think exercise is helpful to the rebooting process, and I think listening to music could be a very good substitute activity for porn, even though listening to music would probably give one a good hit of dopamine.
The problem is not dopamine per se. It is the instantaneous and continual surges of dopamine from internet pornography. Anyway, that's my understanding.
My final comment is that, if what you suggest works for your reboot, then more power to you. We all need to find what works for us as individuals. I just don't think (based on what I have read) that it really makes practical sense to talk about eliminating every activity that we find pleasurable that could result in a significant release of dopamine.
