(relatively low stakes, as in like not 9/11 or JFK level)
Mine: plastic straw (and now plastic cutlery) ban initiatives are directly funded by petrochemical companies. Plastic straws are one of the most common and useful types of disposable plastic an average American encounters every day, so banning them causes people a huge inconvenience and tarnishes the idea of other green initiatives (that might have actual teeth) as more nanny state "not allowed to have this"-ery (also has the side effect of making gullible libs think they're actually doing something to help the planet by using a reusable straw while they get their plastic container of meat products)
I did Invisalign with one company but do my cleanings with a dentist who is a family friend. There's been several times where the other company has said I needed some expensive procedure done and when I've gone to the family friend he's laughed and said they're just trying to make money off of me. It really sucks that with so many of these professions that we can't trust them not to take advantage of us.