I'd say this is more of a feel good announcement than anything as it will have extremely little impact on the gaming industry. There are billions and billions of dollars to be made through MTX, major publishing companies do not care what small time studios have to say. The amount of people who actively stray away from MTX purchases are few in number compared to the people who spend money on in game purchases. You see small boycott attempts on subreddits for games all the time over MTX and they amount to nothing, there's just too many people that spend on cosmetics and in game boosts (when applicable) for game companies to back down from including them.

When done right, MTX options can be fun for players and profitable for the company. The problem is that they are rarely done right, as greed so often takes over. A good example is the last few Call of Duty games. They like to start the loot box system with cosmetics only and assure players that loot box only usable items will never happen. Only for them to be added months later as they realize how much money they can make from it. Sure controversy always ensues but who cares, these decision makers don't have a care in the world for people who complain, they raking in billions.