Then the warning obviously isn't directed at you

Once again, I didn't think it was.

It's for everyone who does need to be told that tinkering with the electronics in the controller can break it if they don't know what they're doing.

Anyone dumb enough to need to be told this would pay it no heed.

"Welcome to your new linux system. You can delete or modify anything you want in the root directory, but we recommend leaving that to someone who knows what they're doing."

No Linux distributor in their right mind would tell you anything like that. They would tell you to learn.

It's not a mixed message.

It very much is.