In that case, your second and subsequent points should have no text, since the source material has no text for them. And the last point can't arguably have text at all either way. 😉
More seriously, the source material has both texts and images, and it was your choice to only represent half of that. You could have easily written:
meme explanation
Note: Descriptive information is in italics.
text
image
understanding a meme with text
Small brain
understanding a meme without text
Normal brain
understanding a meme without text
Nor image
understanding a meme without meme
❌
Or:
This meme is taking the classical "expanding brain" meme, and removing increasingly more content with each panel, implicitly prompting the reader to interpolate more information at each step, to practically illustrate the concept of the meme itself. The last panel has nothing at all.