This article is extremely correct and true, bordering on obvious. Vectors are a feature of a database engine that all engines will eventually offer -- not a new category of databases.
I bring this up because the ad hoc analytical use case for graph stores is so niche most engines haven't even seen enough demand to introduce it because you can always store graph relationships and offer retrievals in those engines to a limited depth which is typically sufficient for most operational / transactional use cases.