I don't know much about history web design, or whether "responsive" is equivalent to "the user shouldn't have to scroll to the right or zoom out". But I don't like this change.
This (screenshot is at 30%) is readable on my phone held at a typical distance, being one to one and a half feet from my face:
But alas, that's the Desktop view of my mobile browser (Firefox), which has its own problems.
And I can't zoom out any further. On mobile it looks like this:
And I can't zoom out again. I can read this very clearly at, I kid you not, at one and a half meter (that's about five Freedom Units) distance from my phone.
The feature request: please don't do responsive like this. Let me zoom out to get more text on my screen.