You can protest by using a Hackintosh. I'm sure Apple's aware of how big the Hackintosh community has become and I think it's part of the reason we're seeing niceties like upgradable RAM on the new Mini and iMacs.
Here's subscribers over time to /r/hackintosh [1] - about 600% growth over the last 5 years. Also, the 2014 Mac Mini removed the ability to upgrade RAM [2], but now it's back with the 2018 Mini.
Not convinced about the subreddit stats tbh. I've been subscribed for many years but I stopped building hackintoshes 3 years ago. It's a shame the comments/posts are limited to 1 year only.
Thanks, I didn't know the 2014 model didn't have upgradeable RAM. The last one I bought was the 2013.