Completely invalid in my humble opinion as a company owner and manager. The TL2 is not enclosed so eye protection is essential here. You present another example why eye protection is needed all the time and that is even with enclosed machines some chips still escape. Are air guns used for blowing off chips when reloading machines, this makes eye protection essential. Even for people not operating machines eye protection is a good idea because they can walk past a machine that is open or an operator blowing off something. Just coolant spray can be dangerous because it is very irritating and distracting if it splashes in a person's eyes.
I cannot understand a management attitude that says eye protection is not necessary. Normally in my experience it is the other way around with the workers not wanting to wear eye protection.