I'm not so sure. Israel's penetration is limited to quick in-and-outs and highly-choreographed special operations to go after deep, very high-value targets, it's not routine freedom of maneuver. While the Syrian Air Force isn't much of a threat, the ADA system is, and the Russians have done their best to make it better and more resilient after each one of those Israeli penetrations. If the Syrians succeed in taking out a single B2, they're going to look like the winners.
Cruise missiles will be the first thing in, and while your dead on about their ADA, they won't survive well enough to be a significant threat to our B-2's after 40 cruise missiles do their thing. I wonder if our cruise missiles have HARM capabilities...
In most sports, cold-cocking an opposing player repeatedly in the face with a series of gigantic Slovakian uppercuts would get you a multi-game suspension without pay.
In hockey, it means you have to sit in the penalty box for five minutes.