Could a native speaker weigh in on the following dictionary examples that use "en" for people?
- https://www.collinsdictionary.com/dictionary/french-english/en
>> Combien d’élèves y a-t-il dans ta classe ? – Il y en a trente. — How many pupils are there in your class? – There are 30.
- https://www.larousse.fr/dictionnaires/francais-anglais/en/28919
>> Tous les invités ne sont pas arrivés, il en manque deux. — All the guests haven't arrived yet, two are missing.