That argument kind of died when we found out we were being surveilled on mass, with all our communications being kept to be used against us at any point in a Stasi fantasy.
You can't claim trust when you've shown yourself to be totally and utterly untrustworthy.
Moreover if the public servants can get your communications so can organised crime.
Law enforcement can do their job without it. Because they've abused it so thoroughly they're going to have to.
Improving on the design of Exceptional Access systems isn't just about math, nor about considering the problems of key escrow. Rather, it's about considering how to reduce the risks for the issues you've raised.
Fighting on principle is fine, but if the laws are changed to require exceptional access for these systems, it would behoove everyone to work towards a better compromise. Otherwise, your concerns will remain.
You can't claim trust when you've shown yourself to be totally and utterly untrustworthy.
Moreover if the public servants can get your communications so can organised crime.
Law enforcement can do their job without it. Because they've abused it so thoroughly they're going to have to.