No, this site is especially bad. 50% of the total screen real estate is taken up by useless margins that shouldn't be there on mobile, and the text size is way too small. Most sites do a way better job of rendering on mobile.
Yes, that site was poorly designed. Unfortunately is true of most sites to varying degrees IMHO. I browse in desktop mode on mobile (because I don't want the sites to treat me differently) and then use reader mode to read (because then I get a consistent experience).
