Well the network didn't feel any impact now when China speculators and investors are using it as a getaway from CNY devaluation, so i doubt it would be a "massive" impact,
and also; the users would buy from exchanges and keep, as store-of-value , which would not make them network "weigh".
I for one hope to some extent that this happens, given the fact that EU is already becoming bitcoin-friendly in recent events.