I mean, there's actually an active lawsuit against Altria for securities fraud Altria lying about JUUL to their investors. Similar lawsuits are common. Being a public company gives people with lots of money and lawyers (i.e. investors) motivation to make sure that the company's core value proposition isn't a big fat lie.

I don't think that alone is sufficient evidence to immediately completely trust Kape, but it's worth some points in my book. And if the lawyers don't pull out any dirty laundry after a while, I'm going to assume there isn't any.