Let me guess those lawmakers themselves will communicate with uncompromised encryption, it is only everyone else that will require a backdoor making all data passing essentially unencrypted. For a second guess let me suggest those lawmakers will not imagine themselves in any way personally responsible for all the data lost by individuals as a result of their proposed measures.
Calling it now: before the end of this decade, doing anything (legit) online will require users to verify with a government-backed identity solution provider. Both in EU and US (and therefore de facto everywhere it matters).
Maybe then we'll finally get a cool separate web with hackers and neuromancers and whatnot.
Probably not.