Here's a guess:

Pumpfun is just a money laundering machine.
They have over 100 million USD in daily transaction volume, even though the chain is already cold as a morgue.
They're running some kind of bot, constantly issuing tokens, bundling transactions, and losing about 1% on fees. Repeating this process over and over, dirty money gets cleaned and turns into legit money earned by pump.
A more sneaky tactic is: tell customers in advance to buy a certain pumpcoin, then inject liquidity to let them win a trade, allowing the customer to cash out smoothly.
All their updates focus on preventing third parties from taking a cut, so they can launder money more efficiently.
This also explains why they completely ignore the user community, because users are not their main source of income.
Of course, this is just speculation and theoretical reasoning.
Who knows, haha.