The commercial market is practically in free fall right now for overlapping reasons. This has meant guntubers have had to push harder or change out advertisers. Every time they oversell or just plain huck garbage or gimmicks, a largely silent cohort lose trust and interest in their opinions. Same is true for decent luxury goods, but for other reasons: "I am better than you," might not be what they are saying at all, but it's what a lot of people hear.
I have noticed too many of my peers say "well if they pay enough." I have been mocked for refusing good money on harmless, but overpriced products. Here is the problem though: if I recommend you buy something that mostly works and costs 3x what it should... That buyer's remorse is going to come back to affect an intangible currency I have been banking up: Good Will.
Sure GW isn't money, but it is a relationship modifier. It gives a skill buff to everything I say. It helps people feel OK with direct, honest marketing like merchandise or donations. Every falsehood diminishes GW in your viewership. How much and how easily depends on the viewer. When they go quietly it is a loss, but I think you guys have seen time and again that once they get jilted, they start actively eroding the rest of your base.
Now all of that is just the business argument. More personally I really just couldn't sleep at night if I pushed something I would not use.