On The Subject of Binary Puzzle

(This is part of a series of puzzles written for Timwi for a Secret Santa puzzle exchange, themed around various custom modules for the game Keep Talking and Nobody Explodes. No KTaNE knowledge is necessary for any of these puzzles except the final meta; each puzzle resolves to a single word or short phrase.)

On The Subject of Binary Puzzle

0000010001111001000010110110010010010011111000011111010011000001010111000101000000010100011000011101011110111011110111010110101100000000000000000001001000111000011101010000000111001101110000010111100011100100010000001000000000100101011101010000100000011000000000000000000000000000100001111000000000000000000010110111100011101110110100101000011001000010000000010101010001100100000010000100111011100010111101011000000000000000001000000000101000010000000011000001111100100111101011001000000001001011001000001111100100010010110000000

Logged

First we must

arrange the numbers into a $$23\times 23$$ grid. I have colored the numbers here black=1, white=0
The first square tells us to look at the middle columns which clearly spell "DELETE".

Deleting those columns and arranging the remaining numbers into a $$17\times 23$$ grid, we get
spelling "THIS TOO" in the middle cells as hinted by the second square.

Deleting those cells and arranging the rest into a $$13\times 17$$ grid, we get

The first and last three columns spell "Add 7 bits"
Deleting the first three and last three columns, adding seven bits and arranging the rest into a $$18\times 7$$ grid, we get the following picture where I have switched white $$\rightarrow$$ red (except the 7 extra bits are white).

• That answer is correct! (The message that's "a bit harder to read" isn't quite right, though -- it's the first and last three columns.) – Deusovi Feb 8 '20 at 21:13
• @Deusovi Yes, I can see it now. Edited. – user39583 Feb 8 '20 at 21:24