1. That still doesn't make it okay.

2. No, you're not allowed to lie until blue in the face when selling; https://en.wikipedia.org/wiki/False_advertising is illegal. (Is it underunforced? Probably. Do I wish those laws had much stronger restrictions and harsher penalties? Yep. But is it illegal to lie to sell things? Still yes.)

(IANAL and this isn't legal advice. Though it is moral advice.)