Why does Canada seem to have a disproportionate share of the Bitcoin thinkers and influencers?

Anyone know of any good blogs, vlogs, or regular youtube videos where I can get up to speed on the Bitcoin Core controversy?

Trying to understand UTXOs. Tell me if this analogy makes sense. I have a 10 oz gold coin and a 5 oz gold coin. I owe you 12 oz. So I melt my gold down and onto two coins, a 12 oz coin and a 3oz coin. I give you the 12 oz coin and I put the 3 oz coin back in my wallet.