So we can’t simulate the ToS changing? Well, I suppose if this has no effect on Certbot after registration, then it doesn’t matter.
Is there a chance of this behaviour changing in V1? Our release cycles are quite long, so we will be using V1 for a few years at least. If the LetEncrypt server changes it mind and decides it requires re-acceptance of the ToS once they have changed, we are in trouble.
I think our legal team is worried that the ToS could theoretically be changed to include e.g. a statement that declares that usage of this service entitles LetsEncrypt to 10% of your global revenue.
Hence accepting the current ToS and all future versions makes them nervous.