That's misleading. There's no need to burn. Burning coins only works to mine more coins. Primer- has a long story of trolling, please disregard that user. You can mine with PoW and sell those coins. You can mine with PoB and sell those coins. Both are equally valid. The only change of this coins in regards to more traditional clones is that there's no need for everyone to have big mining rigs because most coins are mined via PoB.
If you want me to explain it in spanish (i assume you're hispano because of your username), you're welcome to send me a PM and then i can help you understand the coin a little bit better