I wouldn’t expect a marked difference in the quality of non-controversial research whether funded by a national granting agency or private industry. That said, I’m not an expert on the topic, either.
As for “controversial” science in the sense of “any science that business/industry doesn’t like,” the pattern is quite similar whether we’re talking about lead, asbestos, climate change, et cetera:
Find a couple of researchers who will play ball to say your product is safe despite all the evidence to the contrary. Point to this repeatedly any time the topic comes up. Ignore the mountain of evidence that says you’re wrong at all costs, and undermine it any way you can. Buy as many politicians as you can to try and prevent regulation.
As for vaping, I’d need to see some examples of bad academic research. I’m not sure you can blame the scientists for the consequences of poorly-regulated businesses. They can only test the products that they’re given and tell you whether they’re safe. They can’t tell you if a manufacturer is going to change the oil they use or decide to include heavy metals.
That’s up to the regulators to prevent.
No problem, best of luck! :)