No, it’s quite reasonable given the long history of companies covertly funding FUD campaigns about competitors. Those don’t need to be complete fabrications like Steven Milloy’s “junk science”, either — it’s easy to give a negative impression by quoting the scariest cases rather than average or ignoring work which is already being done to address concerns. You can say “I’m just quoting experts” and still pick the most extreme voices in the field to highlight.
The way to avoid this is disclosure: say “I make money from a competitor” prominently so people can read the article with that bias in mind. This guy doesn’t acknowledge it at all in the article or his bio, which is not what you do if your goal is to have an honest discussion.