160-180 temps are drag race, track only stuff. It's not peak efficiency, it's peak power for a VERY short period of time. It's not the best operating temperature for efficiency or longevity.
Thats just not true. Have you ever done it? And used the appropriate compression ratio? If you ever do it you’ll wonder why you didn’t do it before.
It isn’t less efficient and it has ZERO affect on longevity if you do it correctly. I suspect you’ve never done it and you are speaking from conjecture and speculation.