Ask HN: What are people's thoughts on product tour builders?

My PM is trying to bring either Pendo or Appcues into our product so they can add tours by themselves when we launch new features. I'm a bit wary about 1) having them attach stuff to random elements that I won't really have visibility into 2) having 3rd party code executing in the client

I also think most of those tours kind of suck, and that they probably won't be that effective.

Anyone else have experience with them? Am I off base? Strategies for pushing back?