Agreed but the context is completely different. The airbus flight computers rely on data from three sensors and thus are triply redundant. AF447 happened in severe icing conditions with water ingressing into the pitot tubes on the ground. All three pitot tubes froze, causing all three sensors to report bad data. The aircraft identified the discrepancy and degraded from normal law to alternate law as expected so it would not make any decisions based on the faulty data. The crash ultimately was caused by the pilots being disoriented because of the very low visibility. The sidestick issue is a different discussion, but its not related to the 737MAX accidents.
The MCAS system on the other hand is not triply redundant, and that's what people have issue with. Boeing itself has more redundant envelope protections on the newer models like the 777 and 787.