Why not just install it on all your computers while the internet is up? It is not like Steam, which requires an internet connection every 30 days. When twitter goes down for ten minutes it seems to make the news: I'd put "power outage for a week" in the major calamity category.
I prefer the previous key-based activation, and imagine the new approach won't stop the protection being cracked for very long, but it does feel like people are making more of this than is needed. CS3 is fifteen years old and you still seem to be bitter about it: are you saying that if you can't install Affinity V2 in 2037 after spending £90 today that you will feel hard done by?