This is only true for some things like pearls, silver or other resources.
On the PC Version are many things possible as well. BDO has many things client side instead of server side.
I saw a private youtube video where someone changed atk, cast, mov speed as well as cooldown on the mobile version (it got taken down unfortunately)
I would create some kind of hack for that myself, but no experience with mobile hacking..
They use AppGuard for protection, also no clue how to get around that, seems to be a bit harder to bypass.