kinda unrelated because this is a subtle possibly meaningless thing and not direct shilling but
do people realize that tpc have been shilling eevee, and even specifically eevee as a second mascot alongside pikachu, for a while now? the leak, if fake, was probably made with that in mind.
eevee shilling does not mean "pokemon lets go confirmed!!" its just the same eevee shilling thats been happening since before the leak