You're joking...right? The question isn't if something is available, it's what's already being used. Installing Linux would require you to boot from a flashdrive or install it on virtualbox, both of which for most people are unnecessary as shown by the statistics on % of operating systems people use.
What's the Linux % statistics of crypto currency miners? That's the only relevant statistics. Whether your grandma uses Linux or Windows is irrelevant.
I'll say that pretty much every single coin launch has and has had people asking about Windows binaries and complaining if they aren't there, so either there is a significant segment affected by that, or they are all trolling.