While I would not have used the harsh words, grandparent is right in most respects.
I challenge you to quote the 'misleading' sections verbatim
Voila:
Sustainable and cost effective ecologically designed
lamp powered by "tap water" and "table salt!"
The lamp is not powered by tap water or table salt. It is powered by a non-rechargeable battery. This is misleading, putting it charitably. To anyone who knows anything about energy, this is not just "semantics" it is an false claim about the fundamental nature of the product.
Perhaps they meant to put "powered" in scare quotes, not "tap water" and "table salt" but they didn't.
Edit: more examples
You can also use the ocean-water to power up your lamp!
Use the ocean-water to power up your lamp and it will
give you 8 hours of running-time.
Store ocean-water in bottles and use them to power up
you lamp anytime, anywhere.
To a naive reader these statements imply that the energy comes from the ocean water. It does not, therefore the statements are misleading.
Perhaps they meant to put "powered" in scare quotes, not "tap water" and "table salt" but they didn't.
Edit: more examples
To a naive reader these statements imply that the energy comes from the ocean water. It does not, therefore the statements are misleading.