Most definitely is. Like Imao, this is probably the most f2p gacha game you can find cause not only does it provide a lot of free resources, people need to spend a lot of money if they want to quickly boost their power, which makes it at least somewhat reasonable for f2p players to compete in the competitive side.
I totally agree with this. If you refer to other gatcha games like 7ds this is really f2p friendly. In 7ds I have to grind for 2 weeks to 1 multi. In Black Clover M I got 2 multi's just finishing a few missions and story mode.