But doesn’t this help defend a 30% app fee, when apple is also paying marketing costs to help the app get more customers through it’s service?
You might have an argument if Apple was bidding on more general keywords like “online dating” to send traffic to the App Store’s Tinder page.
Apple are trying to intercept purchases and/or raise ad costs for the mentioned companies.
Not even taking in account the rise of advertising for the app creators self, the loses you have from not being able to redirect to your own website, giving specific incentives that Apple doesn't allow etc etc etc.
So no, it's not just bashing, and that's the reason Apple does it secretly
I agree. When you have as much economic power as Apple does every move has some side effect. In this case they are actually doing something nefarious and the side effect is simply shifting app company profits to Apple.