There's a difference between being the middle man so you can minify for the user, and logging all that goes through you. Just because we can't detect that change anyone who offers that service is a government lackey?
I like Opera Mini, which is just like this. But I hope my bank blocks it.
Of course there is a difference between just Mitm for compression and outright eavesdropping. But with this point of attack a government can simply walk to Nokia with a court order, and Nokia will comply, most likely without much of a fight.
Or a little bit more abstract, the technical security is broken and the user relies on social norms for his privacy. The same social norms which forbid my ISP to sniff my non SSL traffic.
Certainly they don't log "all that goes through" them; that would be stupid and not really practical. However, nothing is stopping them from logging all data from specific persons of interest, or using MITM attacks to discover passwords, etc. Law enforcement, spy agencies, and others would be very interested in such a capability.
The whole point of HTTPS and end-to-end crypto in general is that you know the communication is private between just you and your counterparty. If you subvert HTTPS so that there are middle men, that is broken.
I like Opera Mini, which is just like this. But I hope my bank blocks it.