There's an article that can be read here
The way I see it; it's Hogan desperate attempt to remain relevant in the modern age when his time in the sun has long passed. Furthermore; to my understanding Hogan knows little to nothing about Hockey.
He goes and mentions Punk by name first on twitter, and CM Punk being the guy he is won't respond unless mentioned or given a motivation to respond.
And he did what CM Punk does best in verbal altercations: calls people out on their non-sense.
I didn't realise that Captain John Cooper was from the future and humanity's last hope against the machines. Kudos if you get the reference.
I can see it now: Hulk Hogan in Terminator: The Ice Captain's name he got wrong. or words to that effect, lol.
I could add something to what Punk had to say about a guy whose about as relevant and popular as the idea of a Sonic Boom sequel, but he already did it for me.