That's one definition. A word can have more than one definition. Cambridge: "a person who has had a lot of experience of a particular activity"[1] Merriam-Web

That's one definition. A word can have more than one definition. Cambridge: "a person who has had a lot of experience of a particular activity"[1] Merriam-Webster: "a person of long experience usually in some occupation or skill (such as politics or the arts)[2] Oxford: "A person with long experience in a particular (non-military) position, field, or activity; any experienced or ageing person."[3] Vocabulary.com: "Veteran commonly refers to someone who has fought in a war––think Veterans' Day, the Vietnam Veterans' Memorial––but, in fact, the word can mean anyone with experience in a particular field."[4] I could go on. They used it correctly. 10 years is plenty of experience for this field to use the term veteran. [1]: https://dictionary.cambridge.org/us/dictionary/english/veteran https://dictionary.cambridge.org/us/dictionary/english/veter... [2]: https://www.merriam-webster.com/dictionary/veteran https://www.merriam-webster.com/dictionary/veteran [3]: https://www.oed.com/search/dictionary/?scope=Entries&q=veteran https://www.oed.com/search/dictionary/?scope=Entries&q=veter... [4]: https://www.vocabulary.com/dictionary/veteran https://www.vocabulary.com/dictionary/veteran