Not everyone writes with you in mind as their ideal reader. Some people write for themselves and publish to keep themselves honest, though I don't presume to know what OP's motives and goals are in this case.
People exist with visual disabilities and giant walls of text in layouts such as yours might as well be a magic eye puzzle.
Yes, you like it and can do what you want, but you're throwing sand in the eyes of people you want to read your stuff.
Visual disabilities are an argument for having a font size consistent with the rest of the web and a site where browser zoom works, not for making your text larger than the rest of the web.