Allocating a subnet is way further away from reality for most people than configuring one router feature on the router they're using.

There's also a lot of people that configure these devices (or linux routers) themselves but have never heard of VRFs, you got to learn about them somewhere so I just hope this helps some people :)

I see your point if someone is at the level of tinkering enough to learn Mikrotik gear. I was loosely equating VRF with general Linux policy routing, where you end up owning a bit more of an overarching config with fwmarks etc. And then I reasoned that Mikrotik was more complex than that, because I personally avoid doing config on my Mikrotik devices in favor of the Linux router (which is the opposite if you're coming at it unopinionated). But if someone wants to understand just enough networking to copy and paste Mikrotik examples, I do think your post is good general suggestion for that.