An unlimited, humiliating ass-whupping of Assad would be very bad for him, though. Why should there be a Syrian Golan Heights? It’s higher than the Israeli side, and therefor is important. Friend of mine temporarily occupied it in ‘73, and the snow and cold was more deadly than the Syrians.
It would, but Arabs always miscalculate. Could Assad assume that Israel wouldn’t respond in force to limited incursions, he could, and if he’s right it would rally a portion of Syria and the Arab world against the common enemy. Whether limited incursions means limited response is up to Israel. If it was the US, Assad would be correct, we’d underact. He’s treading dangerous ground, and depending on his actions, giving Israel the opportunity to clear southern Lebanon at the same time.