Interpretation might vary;

~2013 I responded on twitter about "a dev who has 15 years of experience with PHP" with, a response about why I would be concerned that that could mean the developer never learned the PHP 3 (much less 4) object model.

And if you tell me you have 15 years working with "any" Graph database, that seems like it would have some irrelevancy to the Graph Databases of today.

Of course, it's also possible to "forget" experience, at least on paper and an interview; and changing your resume to do so, may be advantageous as you get older.