Still working for me yeah. It was actually somebody else posted that information here right around the time I made the switch from GSO. A lot of people were complaining about pip from MCT and somebody then mentioned the c12 chain being a problem. A few others who were complaining about pip confirmed their oil was c12. I figured I'd buy some MCT without c12 and brew a small batch to test - sure enough it was pain free and it's been two years or so now.
So my evidence is merely anecdotal from others who have shared their experiences, as opposed to personal, so your mileage may vary but I have yet to find anybody complaining about pip who has confirmed there is no c12 in their MCT