> Another thing that should not have happened is installing the cable in loops in this way: any 'building' or 'underground' type cable needs to be of the exact length required at the demarcation point...
This hasn't been my experience with fiber entrance cables terminated by ILECs, Spectrum, and Lumen. They typically leave a significant service loop bound to the cable ladder or backer board-- usually 15-20 feet.
I have a > 75ft service loop on a 48-count underground burial fiber from the street.
Depends on the type of cable assembly. If it's fiber strands inside a soft-ish plastic jacket (and most of the cable is in fact in conduit), a service loop is fine, albeit a bit pointless for most repair scenarios. For armored cables (which are significantly stiffer), you only do these loops in situations where you expect to need to replace significant sections (think 'getting hit by a falling tree' or 'particularly aggressive rodents') and you have the space.