The white knights don’t seem to understand that the very idea of GLs break the game on fundamental levels. Sure, the newest, shiniest character is always OP, and I don’t think that’s the biggest issue. But the gap between GA$ and DR is nowhere comparable to the gap between SLKR and GA$. Their stats are heaven and earth compared to the rest. The GLs are so much overboard, they break most game modes. They scrapped a raid because of them. They are not healthy for the game long- or short-term.
The monetary investment is a secondary argument/problem. Everything in the game is possible to get through f2p patient farming.