I don't see that message in the thread. Maybe I muted that user or something else is weird.
Here's my original message just 1h after you posted.
I find it weird that you can add a character whenithe task was to find an EXTRA character. The only way to prove the solution works is to post a decoded message.
#m=image%2Fjpeg&dim=1063x1763&blurhash=%5D8Q%2CB%24NF%7EXjs_3t7j%40oeWBWB%3FbRjV%40j%5BWBt7j%5Bj%5BWBWB-%3BWAWAj%3FWBkCj%40j%5BWBay-%3BWBRjofWBWBoeoLayax%25MWBR%25j%5Bay&x=4112d435f57ccb71968d558bfee1f70e913556e76f15f18fcb9f742fe6f3c856