There isn’t a lot of latitude in properly fixing a car. Cars go together in a certain way, and there are a lot of instances where you don’t have a choice in how much you have to remove to access what you need to.
Is the shop supposed to either not do the job correctly, and end up with a pissed off customer, and a pissed off manufacturer (possibly losing the approved shop status) or do it correctly and let people whine about the price, or eat the labor because YOU think it’s outlandish?
I’ve dealt with insurance enough to know that they buckle and dime literally every line item. If insurance paid it out, there wasn’t likely much choice.