Yes because leading a kingdom that was completely ravaged by undead, having 90% of your population destroyed, then your prince and a good half of your people allying themselves with demons while the rest of your people are addicted to magic, then having a new warchief who treats you and your people like garbage is an EXTREMELY cushy job.
Do you even understand what politicians and world leaders do? Especially ones that are allied to one another? Do you really think that Lor'themar and Sylvanas, and every other racial leader for that matter don't have extensive reports and teams of people exactly for the purpose of keeping them up to date with what is happening in the rest of the world, ESPECIALLY the cities they are allied with?
Lor'themar makes sense, for both factions. For one it explains why the Alliance just packs up and leaves after taking the city. I don't know why people are so upset at the idea, since by looking at the character, he would make a perfectly good Warchief... OH but wait of course he's a blood elf, which automatically makes him a second class Horde citizen. Baine or Vol'jin will surely speak up against this outrage! It's not like anyone learned any lessons from Garrosh excommunicating and oppressing their own people because of his own bigotry and racism.
I want Lor'themar because it would be interesting. We've had a Thrall, we've had a Garrosh, now give us something new and interesting instead of just a renamed Thrall which is what people seem to want.