It's unlikely that this will end up happening. ISPs don't have any reasonable incentive to block crypto trading.
They didn't block crypto trading before these regulations were passed (2013-2014), and similarly, it's very unlikely that they will do so now.
There are many states with more restrictions over the Internet than the United States, and in most of those states, crypto exchanges have not been blocked.
how can they block cryptotrading on ISP level without deep packet inspection?
and if they are planning to introduce DPI,blocking of cryptotrading is the least of your worries:
agentcies will be able to monitor and curtail your internet without your knowledge or consent
I mean they might be doing it already and probably are doing it for quite a long time,but this is going to "legalize" it