Interesting. Ignoring the opinions of you and Khaled Atallah, the actual UN report says Israel has been responding to Syrian violations of the Disengagement of Forces Agreement between Israel and Syria. It says nothing of al Nusra/al Qaeda:
"The Syrian armed forces continued to deploy personnel and equipment inside the area of separation...
... the presence of the Syrian armed forces and military equipment, as well as any other armed personnel and military equipment, is in violation of the Disengagement of Forces Agreement. As underscored by the Security Council in its resolution 2131 (2013), there should be no military activity of any kind in the area of separation."
United Nations Official Document
Yes it does. It is childish nonsense to deny it:
"UN observers in the Golan Heights meticulously detailed instances of contact between IDF soldiers and rebels, including Syrians being sent into Israel for medical treatment, and the transfer of items and containers, according to records maintained by the UN disengagement force in the Golan demilitarized zone.
The reports use “armed members of the opposition” as a blanket term to describe rebel and jihadi groups operating against the Syrian government.
With the onset of the Syrian civil war in recent years, peacekeepers have been attacked multiple times by jihadist groups such as the al-Nusra Front, who have taken control of most of the Syrian side of the border."
UN Israel interacting with rebels on Syrian border The Times of Israel