Lying is also intentionally misleading, so I'm not sure if your conclusion makes sense. Plus I would assume recurrent lying falls under the "dark pattern" category -- it certainly isn't a good or neutral pattern.
Lying is fraud, plain and simple, the laws and courts nailed that hundreds of years ago. A dark patter may be fraud, or in some way illegal, or may not, depending on details and jurisdiction. Those details might also include intent. An accidentally bad UI that costs customers money is not the same as a UI that purposefully leads customers to the same situation depending on what you're trying to determine (i.e. was the law broken, or is the UI not good).
And not all sales/marketing tricks are inherently evil. I don’t think eBay telling you how many users watched an item in the past hour is immoral so as long as it’s accurate.