Big zoom, poor artist

I don't know this person so I can't say that but in general, amateurs who have professional tools and who make "wildlife" photos in a non-wild place like here, it's just people who want to show they have money and big tools...
For this one, I have this idea cause he's not looking for different angles at different places with different subjects, he is just waiting, sited on a chair, and with a tripod...