Cedar Park Nissan

Was quoted $1500 for changing the lower arm control mount, as bushings were torn. First, they said it was a “safety issue”. Then I asked what would happen if I didn’t change it. They just said tires would wear unevenly. Doesn’t sound like a safety issue to me. Also, no explanation on what the part did, what I can do instead of changing the entire mount (can I change just the bushings, for example?), if this is typical for a car that age/mileage, etc. I’m not asking for discounts, just information. I usually just don’t spend $1500 on such little information like that. Also, I was just in for a complete strut replacement 5 months ago, so I don’t why it wasn’t caught back then, as they were literally looking in that same place the whole time. Prices for other services are just getting so high that I have to seek out an independent mechanic. It’s just not worth it anymore.