People play basketball, soccer, tennis etc how many years long already? Anything major had changed? Probably none. Are people still playing them? Yes.
When a game or a sport or anything is fun that has a huge replayability than it will live forever. U dont really need meta changes like cough, league of legends, overwatch, valorant etc to shake up the meta to proceed to make the game fresh and interesting. Thats the issue with hero theme game. U need new stuff every week or ur adhd audience will not stick around. Look at cod, it’s basically the same thing and people still buy it every year. Valorant is literally worst than cod when it comes to the replayability. Matter fact, people still enjoy the og character more than any new character thats released recently. Jett replayability is 100x more harbor/iso/clove/deadlock and many others. People play certain characters to win for the sake of it is the meta. They dont play it because its fun. U want fun, everyone will probably be on jett, reyna chamber, raze, phoenix and other og characters.