It's just corporate accounting. They're profitable but they essentially cook the books to get the tax benefits of being "unprofitable". This is why amazon is still occasionally "unprofitable" even though they're growing year over year. You can't just keep taking out loans to buy and build new warehouses if you're actually unprofitable.

Huffman is just a greedy piece of shit. He, himself, made a comment when talking about Apollo that implied this developer is sitting on millions and he deserves a cut of it. API calls in terms of cost to the company cost fractions of a penny and plenty of large companies make money off their API. They could charge the base cost and add 10% for the profit. The problem is a realistic and reasonable cost for reddit's API would probably cost the apollo dev maybe a few grand a year. Like I said above, Huffman thinks there's a lot more money to wrangle out of developers there, but I'd bet the apollo dev was barely making a fraction of a percent on Huffman's net worth.