Shevia, I haven't googled the controversy yet, but since you live in Israel I'm sure you to know more than the rest of us.
Somehow I was completely unaware of Sodastream until recently. I had a wonderful soda in Tbilisi last year - tarragon. Unbelievable, I know. It has a faint licorice flavor. I tried making it, using tarragon grown in our garden, and it was a reasonable facsimile, requiring club soda. I made some for a party, and everyone was dubious at first, but then they decided it was delicious. They even want me to submit it to our church cookbook! Anyway, while I was researching other flavored simple syrups, I read about Sodastream.