For astronomical information, engage the flux capacitor (May or June 2022) and then find them.
Engaging the flux capacitor means we travel through time to May or June 2022. In those months OP posted this and this puzzle called "Find-the-stars" (astronomical information), a genre OP invented and whose rules are explained there. (This fits with the first and fourth hint. OP was making those puzzles then and the Captain Squared must be yours truly (caPNCApn) who solved both of those puzzles. A comment on one of those puzzles tells about a nephew enjoying them.)
So lets find them!
First let's eliminate squares pointed to by dashed arrows.
Now two of our stars are forced by solid arrows.
We can eliminate the other squares on the same row or column as a star.
Now the solid arrow pointing southwest forces a star and we can eliminate other squares in its row and column.
Now the second row is forced. Then the third and finally the fourth.
Then make Cupid drop stuff.
What could Cupid drop? Hint 5 says he can keep his bow. So we must be dropping arrows. (Since we were never instructed to X out squares, we can drop those too.)
Then you “drop” stuff.
As hinted by OP, this refers to a Dropquote puzzle. With some trial and error we can drop the letters into the grid like this:
and it reads "WHEN I ADOPTED UNICORNS SHE WAS GLAD", which is confirmed by the similar meaning of the title.