The original meme is definitely correct, idk why so many people were having conniption fits over it. In the double slit experiment’s simplest form, not measuring the photons leads to the wave interaction pattern and measuring the photons leads to the two bars as you’d expect from particles.
And since physicists decided to use the stupidest term possible to describe that measurement, the monkey “observing” the experiment is a play on what the actual experiment is doing