For people who do not have Superman’s eyes it would be highly useful to improve the zoom option : using it increases the sizes of the paragraphs and the titles, but for the titles it is irrelevant since they are often big enough. However zooming these titles takes almost all the space on the screen (especially with a laptop) and there is no space remaining for the zoomed paragraphs which is what the person was expecting to read.
Please take this consideration into account, from accessibility for visually impaired people to the simple visual comfort of the other ones, zooming only what is relevant to zoom on the page would make a huge difference.