That looks like a job for shortcuts on iOS, Automator on Mac.
It might be nice to have a “collapse this paragraph” option so we can keep the source for the resulting image in the note.
I’m using a shortcut to produce weekly checklists, which turns
Habit 1
Habit 2
Habit 3
Into
M T W T F S S
Habit 1 [ ][ ][ ][ ][ ][ ][ ]
Habit 2 [ ][ ][ ][ ][ ][ ][ ]
Habit 3 [ ][ ][ ][ ][ ][ ][ ]
Which is as close to a checklist matrix as I can get. I few could collapse paragraphs the source text could be kept with the generated assets.