plastic coffee maker: 7-20 particles
paper cup : 25000 particles
https://getplasticproof.com/blog/does-coffee-have-microplast...
https://sifts.co/blogs/microplastics/microplastics-and-coffe...
https://sprudge.com/hot-to-go-which-type-of-coffee-has-the-m...
Years ago I looked for all stainless coffee maker and even the most expensive ones had plastic parts. The drip mechanism for all of them had plastic parts. I don't know if they have changed or not.
what, they don't have their company-provided mug with the company logo on it? Though to be fair at work, most employee have been given a mug, there's a stack of freely usable mugs next to the coffee machine and there's a dishwasher there too so you don't have to wash them by hand, but there are still people using the paper cups.