I'm sorry, but zooming is just... dumb... at least for me, sorry. Having a giant text doesn't help the readability - at least for me :( And it's not like changing window size only when visting Wiki is a good solution too - it's nuisance to change window size when you came for a quick 30 second read. At least for me.
Accessibility is individual. I'll be reading Wikipedia articles at 200% now, like I do for virtually all one-column layouts. And this Wikipedia layout has good responsiveness, so no worries.
