Because the target audience likely doesn't know much about computers, and the stock buyer likely knows as little, so the stock buyer can pick whatever looks compelling. The stock photographer is just chasing the trends.
Keywords also create a bias. I doubt most buyers are searching "land grid array", but "soldering iron" is synonymous with anything electronics/hardware related.
Though for once there’s no hand in frame getting third degree burns by grabbing the end of the iron…
Given I am an hacker I can tell from this image that the IP address of this mainframe is 365.127.42.555
You're supposed to apply thermal paste to the soldering iron too, to increase it's thermalness!
