It's not something most users do, so if your argument is "Reification is not on by default for all users" then sure.

But that's a meaningless statement. Most users don't want that ability, or aren't willing to spend the 10 minutes it takes to configure.

Otherwise, you absolutely can enter commands and output state: https://sites.google.com/a/chromium.org/chromedriver/downloa...

Further, there are a HOST of tools that make this process very easy, complete with replay solutions, detailed logging, real time monitoring and all sorts of other fantastic, modern tools.

Just because you choose not to use them doesn't mean they don't exist. Sorry your understanding of web dev is out of date...