What do the subscribers/m and views/m mean?

On your user profile screen you can see a number followed by /m

I'm almost certain that the entire time I've been playing the game it has said 79/m and 0/m. What do these numbers represent?

Those stats are actually what you get when streaming offline when a video is not being made. The first number is the number of views per minute you'd get from streaming, rounded, while the second is the number of new subs you'd get per minute by streaming, which would only increase when you get the Stream Subs Knowledge.

So, in your case, when you don't have the game on, it will generate 79 views a minute, give or take, for however long you'd stream for - normally 60 minutes (one hour) but can be increased to 6 hours.

It stands for per minute - you are getting 79 views per minute, but no subs per minute.