It will be waring factions within government (which is never unitary in any country) --- here these laws/proposals/etc. probably come from domestic spying agencies and police forces in most countries. I suspect that signals intelligence agencies and offensive forces have probably mostly moved to "encryption is good" stance given the number of foreign attacks upon domestic assets (gov, biz, etc.).
However, we shouldn't underestimate the desire for foreign intelligence agencies to bait one's own domestic agencies into "spying for them". So i imagine there's some pressure from, eg., the US sigint agencies to have the EU compromise EU citizens in ways that even those very agencies may today not wish to compromise their own.
At a complete guess, I wouldnt be supried if, eg., the NSA (, CIA, et al.) were goading EUROPOL which was demanding domestic anti-encryption laws.
As an empirical matter, encryption makes agencies like EUROPOL's jobs extremely difficult -- i imagine also because they probably struggle to get coop from domestic police forces, so cannot easily do "the physical police work necessary" to get device access.
In the end, I imagine we'll have china to thank for the end to this nonesense -- since any backdoor will immediately be a means of mass corp/gov espionage.