Well, I don't "revel in insulting Jesus Christ", but I do revel in castigating needlessly confrontational and idiotic behavior by folks who seek out trouble by insulting a community with whom they plan to engage, especially when I'm forced to count them as co-religionists. "A fool's lips enter into contention: his mouth calls for blows." (Proverbs 18:6)
This was far worse than I expected. If you would like to protest dinosaurs as a part of evolution I'd recommend getting a degree in a relevant field and write a thesis, then cite the work of like-minded individuals to support your case in a peer review. It does not seem to me to be the best use of your time to go trying to have a serious cultural chat with people who are probably grogged out of their minds and in this video seem to be taking the piss like the good Brits they are.
Also, I would recommend reading metal lyrics before dismissing the entire genre. I tend to assume most metalheads are atheists, but most metal lyrics aren't anti-Christian in the least. If you prefer metal made by Christians there's no small amount; Lo-Ruhamah, Lengsel, Extol, Drottnar, Crimson Moonlight, Oskord, Paramaecium and Aletheian are just a handful of great Christian bands who have earned respect in the metal community for being good musicians and crafting excellent work.