Dynamic IPs for residential connections where already the norm in the early 2000s (remember dyndns.org and freedns.afraid.org?) yet self-hosted content was much more prominent than it is now. So where asymmetric lines.
That 'self-hosting' you are referring to was actually 'hosting your own stuff on other people's computers in a data center somewhere, most likely the ISP that originally took away your static IP so you can't do it yourself'. True self-hosting is from your own basement.
I'm honestly in the 'old guy from the 1990s' camp. ... once there was a fleeting glimpse of beauty, called 'Internet'.