Also, if you use Outline and submit an article it doesn't already have, there appears to be some kind of race-condition going on such that it stops showing the ad blocker but not the content. Resubmitting a second time usually fixes it.
Of course I can get the content of these sites by disabling JavaScript or otherwise trivially (for me at least) edit the DOM. Obscurity isn't security, so Outline is really just scripting and caching content I could otherwise access so in the grand scheme of things I don't find the website itself to be particularly problematic in the same way I don't find the cassette tape to be. If anything my own behavior and usage of it is the real problem.
I did not have difficulty with the site on an iPhone (though there could be locally attributable reasons for that), but I just checked and things look lovely in Reader View.