It's interesting that you mention Chrome’s silliness when I find Firefox’ dev tools to be severely lacking, especially for WebExtensions. Examples include:

    - complete inability to run code from the console into the content script context
    - content script errors are not shown in the console, you have to open a separate Browser Console
    - overall buggy dev tools (I don't remember anymore because I stopped using them a long time ago)

I guess every browser lacks something, it's just that we notice when we compare "my browser" to the next one.