If you view Destiny 2 like I’m sure Activision views it–game as service–it makes perfect sense. You don’t actually own anything. You pay a fee up front to access the service. You get to access the service from that point, but the actual content of the service varies over time, just like in an MMO. Dollars to donuts the EULA has something in it to the effect that there are no guarantees to what is actually in the game, or that anything that is in the game at one point in time will necessarily be there at another time.Sort of like nerfing class abilities or gear and making you buy the expansion to get the functional equivalents.
Consumer friendly? Not particularly. Annoying? Absolutely. Immoral or unethical? Much harder call; certainly, from their ethical framework, it’s just business.