Nobody wins in this scenario, because if it's true:
They'd be repeating exactly what they attempted with DmC Devil May Cry. Completely alienating the original fanbase (who will play it anyway, as happened with DmC Devil May Cry) and either accept it as something different to the core series but still ultimately hold disdain for it due to the fact it potentially killed off the previous direction because of its success, or put the franchise on ice until they reboot it, because it failed to gather the new audience it needed while alienating the old audience. (Which DmC Devil May Cry did for that franchise)
Monster Hunter is way too big for Capcom to put it on ice, no matter how a theoretical experimental game would go. And it seems like the point of the Switch release would be to keep the series going down its normal path in the event the PS4 game flopped.