Check this out & tell me what you think.

I noticed that the tape on the slide-out roof of our new 2018 2604ws was not adhering well. I took it to the Dealer we bought it from and had a tech look at it cause I was concerned about this area leaking. He told me that this tape was not there to prevent water intrusion. It was there to protect that area from the wiper seal. He said that the seam that the tape covers is protected with butyl tape to keep water out. Then I showed him that the screws were run through the tape instead of the tape covering their heads and he said all manufacturers were different on how the install the screws some underneath the tape and some through it. He also said water should not penetrate there either because of the butyl tape. I'm thinking of removing this tape and replacing it with Eternabond tape but I'm concerned about the edge of the Eternabond tape pulling up after a while from the wiper seal brushing over it.
For some reason the pic I supplied is turned on it's side. Not sure why?