Alot of these games are hard to "catch up" on if you didn't start at the beginning of the game or spend alot. You'll always be on par with people around your GP but spenders will always have an advantage.
This isn't the only game that does it, Disney Arena is way worse on the microtransactions and getting you to spend. Summoner Wars the OG of these games I havent been on that in awhile but I bet you wouldn't be able to catch up to the end game players without spending some major cash. I can list many games, ALOT of mobile games thrive off this. That's the point of them being free to play.
