> the "text-only browser"-argument
That's a bit short-minded, don't you think? Or is this some kind of troll meme at this point? Anyway, I don't expect you to have some off-spec working TLS/TCP/IP/ARP/ETH implementation purely based on text, yet alone are connected to the internet via some text-only telegraphy station utilizing those things. Pretty sure your output device (read as: screen) has some sort of analog/digital signaling as well that's not ASCII encoded. There are sure some pesky non-text technologies involved ...