Seamless would not be the word I would use. I would instead argue that what Pokemon Go proved was that Google's Cloud is not of the same quality, at scale, that AWS is.
What it probably shows is that using the cloud isn't a magic bullet to making you scale indefinitely, you need to work on your code to decouple from the infrastructure too.
What it probably shows is that using the cloud isn't a magic bullet to making you scale indefinitely, you need to work on your code to decouple from the infrastructure too.