Yes, or, failing that, be like this site (or, I presume, any vBulletin), and use sane CSS so it can be overridden with local CSS. itT is quite tablet- and even finger-friendly, when CSSed up right. Of course, it's anyones guess why that's not provided in the CSS switcher, instead of hack your own, but it works anyway.

Reflowing text is not such a big deal, imho, just have your font sane to start with. I have no difficulty reading almost any site; it's navigating that gets rough, and that can be fixed in CSS if the site was designed sanely to start with.

(Anyone trying to make local CSS should try desktop Opera and its "Developer Console" for editing CSS on-the-fly.)