Flavors are subjective, for sure. I don't notice any weird flavor in any of my altcig juices, but I have in other highly praised juice lines. Everyone is different, and maybe sensitive to certain flavors or additives.
As you can see, those of us that like AltCig juices really like them. I have tried some of the ones you mentioned, like caramel cookie, churro, and vanilla love. They were some of my favorites (my absolute favorites are RY4 and Banana Milkshake). I've never gotten a bad juice from them, and I receive my packages in 2-3 days, all the way across the country. I think and speak highly of their juice and service.
Sorry that the juices didn't taste right for you. It happens. I wish you the best in finding vendors that work for you, it's so important to have great tasting juice.