BMW (globally), similar to Porsche in the US, provides a comprehensive list containing all approved oil brands. Therefore, regardless of the dealer's recommendations, customers can still find oils from various brands that are approved by the manufacturer (BMW).
It is important to distinguish between the dealer's suggestions and the official Approved list, which is published by the factory through the dealer network. Moreover, it is evident that the OEM approvals did not receive an extension, resulting in certain brands no longer being officially approved but instead recommended. However, it is worth noting that these products still meet the OEM specifications.
Indeed, you are correct, Motul is often considered a popular alternative choice. While the US Approval list states that Motul has a valid approval, the information on the container and datasheet indicates that it is only a recommendation. This inconsistency raises questions about the actual status of Motul's approval. Although Motul meets the C40 specifications, it is puzzling why the EU does not mention its approval and why this information is not seen on the container.
I don't see any issues with dealers recommending a particular brand, but I find it peculiar that approvals which were valid for several months or even years ago are now being revoked.