Oh well, as a teenager, blocking adobe servers in hosts file was how you got to "phone activation" and could generate a code. So I guess we're even, heh.
Doing this again, now (well into adulthood): recently gifted a "broken" 2013 MacPro[0], and have set it up as my retro CS4 workhorse (decades old software on a decade old machine). Hosts/PiHole ready, blocking "*adobe*" entirely.
Only problem now is I cannot find four's `FCKGW-RHQQ2-`... my oldmanfish surfs onwards, Santiago remaining uncertain. For now I just don't quit and never shut down (fresh install allows limited launches).
[0] RAM slot was jamming, not allowing proper seating
...and then Adobe (unintentionally) gave away free downloads of CS2, with valid serial numbers, once they shut down the activation servers. You can still find them on the Internet Archive.