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> pixelation is destructive

Yes, but JPEG compression is destructive too yet you can (well, most of the time) see what it's in the picture.

With pixelation you are essentially replace a clearly readable character with some yet unknown 'pixel character'. It's even more pronounced on a fixed-width fonts.

Just try it yourself on the clear shot (not a JPEGed to death one) first.

Fair enough, I haven't tried it myself, just glanced over a piece of software that does it (HMM) and saw the blogpost.

In reality , though, removing just a bit pf entropy can be of great value when context is known. With LLMs in mind.

It's not necessarily easy, but possible in some cases. If you can can live with a risk of, say, 1% that someone reverses this, fine. If not, I recommend using black bars.