Ya, there is a lot to learn to confidently move funds through multiple ecosystems... but to seamlessly do it is very empowering. To be able to win DEC in a splinterlands game and send it to pancake swap and trade it for BNB (or whatever) is really empowering and good for the ecosystem. You really can play for BTC now (if that's what you trade your earnings into.
RE: Why DEX is important in Hive Ecosystem ?