Canon are marketing the EOS R5 and R6 as reliable filmmaking tools that professionals can depend on during a shoot.
As we have seen from field-tests of both cameras, overheating nightmares demonstrate this just isn’t the case even on short shoots in high quality 4K 24p. The reliability issues are so serious that paid professional work is a complete gamble in 4K on both models.
Even the EOS R6 with the lower 20 megapixel sensor at the lowest frame rate (4K 24p) suffers repeated shut downs on a short shoot. In my opinion, this is a problem for Canon so severe it may even result in a full product recall and a class action lawsuit.