Seriously, they're not.
*Current should be changed to *Latest to avoid confusion over what specific box the error is referring to, because that's where the bottleneck originates.
Simply changing the name was not enough, and clearing the box all-together added the additional error: 'Invalid: HT Language is missing.' So following the details in the error message to simply change the current trainer name to a different name was not helpful.
The only thing that fixed it was changing the name to '!', like you suggested, which is not detailed at all in the error message.
When people are asking for help, that's all they need. They shouldn't be entering into some mentally abusive, derogatory, invisible contract where they help you fulfill your need to look/feel superior to others (...on the internet...) in exchange for advice. You could've given the help without making up reasons to look down on people who are seeking answers.
