Honestly, I think it's more do to the realization that it might be a while before Amourshipping gets anything for the time being. When episode 47 ended, this is how some people reacted, "Yes Serena kissed Ash! it's canon! What do we do now though?" It also doesn't help when people tend to overreact to possible shippings in Alola, it discourages people in different ways.