I agree with you that bots are a problem for splinterlands, but I don't agree with any of your arguments.
The real problem with accounts that use bots, and there are usually thousands of them, is that they are cheating. They are cheating because they are reading the other players' cards before each battle, and then choosing the team that beats that other player.
If the bots didn't cheat, they wouldn't be a problem because they would be just another player with a good memory and game strategy.