Just went to the Chilton’s for my sister’s Focus after reading your comment. I see what you mean. She complained of the squeaking.
My Dodge Caravan has sealed boots (no zerk fittings) on the front end. I use a 50cc syringe with a large bore needle to pump grease into the boot and use the same hole I made in future greasings. So far works OK with no water accumulation in the boot.
they made silicone spray at the Ford dealer or a Checker Auto store....the trick is to bounce the suspension as you spray lub the area....sounds silly but it words,doesn’t wash off and stops squeaks.......The grommits used today are space age polimers and unbreakable
Every Toyota I’ve seen lately has been the same way.
When the tie rod end boot split, I couldn’t find any parts store with a greaseable replacement. At least when the same happened to my Taurus, I was able to go greasable on the replacement.
Does any manufacturer use greasable anymore? I know most switched because most owners neglected to have them serviced. So while greasable lasts much longer when properly serviced, going non-greasable means a much higher average lifespan for the initial part.
Most owners really don’t know what proper maintenance means.