Paul Graham said the same thing about Python 20 years ago [1], and back then it was true. But once a programming langauge hits mainstream, this ceases to be a good filter.
The fastest iterating people engineers I’ve worked with often have a deep user focus rather than a language affiliation.
I think the cultural context has changed.
In "python paradox", 'knows python' is an indication that the developer is interested in something technically interesting but otherwise impractical. Hence, it's a 'paradox' that you end up practically better off by selecting for something impractical.
These days, Python is surely a practical choice, so doesn't really resemble the "interested in something technically interesting but impractical".