The article clouds more than it illuminates. I don't think the author knows what he is trying to say. This is common in strawman "mythbusting" articles, but even more fraught when the topic is quantum mechanics.
Saying that an electron "isn't a wave" when it is in motion, because the wave is probability, not the electron, is equivalent to saying the electron doesn't exist between emissions and absorption. This is a valid interpretation, but even more conunterintuitive to novice, and raises more questions. Ultimately, arguing over vocabulary as interpretation is a distraction. What the thing does is what the thing is. Interpretations are intuitive guides.
Saying that an electron "isn't a wave" when it is in motion, because the wave is probability, not the electron, is equivalent to saying the electron doesn't exist between emissions and absorption. This is a valid interpretation, but even more conunterintuitive to novice, and raises more questions. Ultimately, arguing over vocabulary as interpretation is a distraction. What the thing does is what the thing is. Interpretations are intuitive guides.