I do see what you're saying, but that's an expected basic amenity.
I wonder what percent of people make use of provided coffee. Some people are pretty strict about what kind of coffee they like, and wouldn't want to use whatever is provided. And some people don't drink coffee, of course.
A study I just looked up said 74% of American adults drink coffee every day. Of those, approximately 9 of 10 would prefer not to have to leave the house for their morning eye-opener, and 1 in 10 prefer papercuts then lime juice in their eye.
Seriously, no innkeeper who isn’t personally opposed to coffee for some reason would risk pissing off 75% of their customers, especially when it’s so cheap and easy to supply. I would genuinely rather a place lack pillows than on-site coffee.
The best situation is having a decent cup while I’m washing up, then a mind-blowing cup a little later while out and about.
The problem is that the scale is now so compressed that 5* means "OK" and 4* means "not OK". 3* is assumed by the system to be a user abusing the review system.