I saw orcs leading Sylvanas loyalists in chains in Orgrimmar, and I noticed some of them were blood elf. It seemed ... out of place. I had a sense that if anyone should be handling Belf dissidents or Sylvanas loyalists, it should be the blood elves. Lor'themar should be insisting they take their own and punish them according to their own customs.
Let's also bear in mind that Lor'themar himself switched loyalties near the end, and supposedly more and more were joining the rebels.. who's to say some of those on the other side of Orgrimmar, would not have joined later?
Also do we know what qualifies as a Sylvanas loyalist exactly? I assume not everyone who was on her side of the wall at the confrontation with Saurfang outside Orgrimmar is being punished.