"Consumer-serviceable parts" is such a stupid term. There are actually no parts that are "consumer serviceable", because a "consumer" is an abstract fiction that is only capable of continually buying new off-the-shelf junk. In reality, these devices are owned by people, most of them quite capable of replacing parts, especially when they're not being infantilized.

The main thing that has changed between traditional cars and EVs are the times. The specific hazards are different and some amount of warning is justified, but plastering something with useless signs that just attempt to discourage without describing the actual hazards should create the same legal situation as having no warnings at all.