My guess is they’re pulling the stunt I mentioned by claiming sugar alcohol doesn’t count. It probably does count for many people although possibly not all. I guess you’d have to determine for yourself whether or not it affects ketosis. But the main thing is, use your judgement. What are all the ingredients in this? Is there stuff that looks like carbs - usually ending in ‘…os’ or ‘…ose’ and sometimes ‘…um’, and/or includes the word ‘modified’? Is there something that is pure fiber, like psyllium or acacia root that could be used to ‘offset’ other digestible carbs? When I find something that looks suspicious on a particular label, I draw the conclusion that the producer is being dishonest to sell product. I may be wrong, but I’d rather be wrong than eating unknowns. It also makes me more reluctant to purchase any of their products. If a producer isn’t honest about what they put in a product I presume until proven otherwise that they’re are not honest about any of their products. I’m not interested in eating any of them.
With the Rebel ‘ice cream’, I would say count as 11 grams of carbs. Whether or not you want to eat it depends on what exactly is in it. 
My GF has been making some butter pecan keto ice ream and it’s off the chain !!! 