Correct. Keep in mind that I made this statement before knowing that, as you correctly pointed out, that he did publish in 2016. If he is still doing these “part time” research, then he is a scientist, just not a prolific one. Perhaps the term part-time scientist is the most apt description.
They are retired scientists.
Just to be clear, when I respond to the negative on this statement:
I do not mean that when you are brewing coffee in the morning you are not a scientist. I mean that someone who has finished their projects and then move on to say, science popularizing is not a scientist.
I am against the fetishizing of scientists in society. A scientist is a job like a car mechanic is. All my answers to the questions you ask can be answered just by substituting “car mechanic” into “scientist”.