Nah, explicit sync is the objectively better model if you want high performance. Android went for explicit sync right from the start and from what I gather also Intel and AMD prefer it. The problem is, that the graphics stacks on Linux have been using implicit sync for ages and so far no one dared to change the status quo. Nvidia was “simply” rejecting implementing an inferior mechanism in their driver. While somewhat understandable, it was still a decision on the back of their users.