Why do you think AI "talks" like that? It is pervasive in a lot oof the training material.
Most people writing scientific literature are not English majors nor even great communicators, their primary competencies are elsewhere. Expecting everyone to write literature is just odd & reductive.
Yes, it helps to be a good writer, but the primary objective for science papers is to convey information; that it is well written or enjoyable is a nice bonus but not essential.