Because ICE continue to sell well, because most serious makes have sorted most issues (a cheap car having issues isn't news for anybody), everybody knows ICE isn't green, etc...
Another proof that conspiracy theories aren't exclusive to the right, try some of Occam's razor.
If you think that "companies will promote articles that malign competing products" and "9/11 was an inside job" are the same level of conspiracy theory, I don't think any fruitful conversation can result.
Another proof that conspiracy theories aren't exclusive to the right, try some of Occam's razor.