Must have been a long time ago.
Only a few percent of Israelis have kibbutz connections these days. Kibbutzim are pretty corporate these days, and are relatively wealthy. Many members are much older than the average Israeli and their kibbutzim seem like retirement co-ops.
But being a foreign volunteer on a kibbutz is something akin to being a recent illegal alien in the USA, mostly hard work and low pay.
Most of my acquaintances did this during our younger years which was a long time ago. But we have a leftist Jewish acquaintance whose daughter moved to some type of agricultural operation in the past few years. He and his wife went over to visit frequently. They always returned with a bunch of pictures and stories about how wonderful it was, the great farming tech that they employed and how great the people were. They were a little freaked out about the frequent air raid warnings where malcontents were firing homemade rockets at their facility and they all had to take shelter. Most of the people in the daughters Kibbutz were recent emigrants and there were challenges when it came to communicating. The daughter got married to someone she met in the Kibbutz who actually was born in Israel and they have now moved back to the USA to raise their kids.
It all sounded fairly familiar so I assumed up until reading this article that the situation hadn't changed that much.