Having personally targeted Lawful Intercept systems at a number of US companies, I am not surprised these backdoors are key targets. They give real time location, call detail records, internet traffic, e911, backend backhaul infrastructure access, etc. From my perspective, the controls around these are too home-rolled, lack central oversight and standardization, and will continue to be a major target. The massive question of civil liberties aside, these systems are key to identifying and preventing nation-state level threat actors targeting Western infrastructure and companies, especially in the event of a wider conflict. More oversight is needed by independent committees vs. pretending these systems don't exist.