I don't know if it's a danger or just the illusion of one, but one of the things that targeted ads supposedly avoid is that of influence. In theory if the floor wax I'm advertising in my hypothetical home improvement content decides that they have a personal issue with some of the ethics I have espoused, then there is pressure for me to change or lose the endorsement.
This could be either direction as well. We could disagree on anything from me showcasing work by a feminist or LGBTQ+ carpenter, to me making a statement about fair trade goods and one of their suppliers is in a country known for rampant human rights violations.
The problem I think is that life is full of compromises, and I don't know that the bargain we've made and are now experiencing the consequences of is a particularly good one.