I do remember. I've been doing web stuff for a little over 20 years. It was not a good time.
1. If a file upload failed your site was broken until you managed to upload it again.
2. Deploying something that required a database migration had to be done out of hours, or the site had to be taken offline to do it.
3. Recovering from a disaster was hard, and pretty much always resulted in significant data loss.
4. Moving a site from one server to another was awful, because it meant SSH'ing (or telnet'ing...) on to the box and compiling things from source. If you got anything in the environment wrong the site didn't work and you had to start again.
5. If you worked on anything that ran on multiple servers you pretty much had to script it all anyway. Essentially there were thousands of different (much worse) build-and-deploy processes people had stuck together with various different tools. Going to a new company meant learning a completely new set of processes. Today's processes are just an industry-standard best-in-class approach to doing the same thing.
I'll take Webpack to compile a site and terraform/compose/puppet to deploy the infrastructure over old way of doing things every time.