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They're probably not going full bore on Pokeshipping because the showrunners blame the overt focus on romance on why XY did so bad in viewership and why many kids jumped to Yokai Watch at the time. They're using MPM's Pokeshipping hints subtly but effectively, making it clear what's happening but also not chocking the childish nature out of the series by making it a romcom. It's also likely why so many of the hints are throwbacks to the OS, to maximize the effectiveness with the older audience that actually cares.