My only gripe is that I would have liked to see (maybe in an Appendix) examples on papers on completely different topics, say one in biology, one in math and one in physics. It would be difficult to pick good examples, sure. But it would significantly strengthen at least my impression of the transferability.
In my view there seems to be enough here to replicate and validate the claims yourself if you wanted to. With a basic level of trust in academic integrity I'm completely fine with this paper.
To their credit, the authors included the models used and the metrics they used to validate their model. They also have detailed notes on the architecture for training which, at a quick glance, doesn't look easy to replicate unless you can borrow some GPU's in the cloud.