"Turtle smashing mental level requirements are not much higher than social media surfing" -- what leads you to this conclusion? It is not clear to me that this is a trivial statement.
I'll second this anecdotally because I have no problem browsing hackernews all day but yesterday I fought desperately trying to crack a coconut for half an hour.
Smashing a turtle is far easier than cracking a coconut.
African or European turtle?
Not trying to be overly pedantic but, turtles and tortoises are two very different things
Tortoises are a species of turtle ("Testudinoidea")