0 sats \ 0 replies \ @BITC0IN OP 23 Jan \ parent \ on: Bitcoin Filters Work By Default, and That's a Good Thing! bitcoin
This was there second attempt of the same transaction. It still took them 3 days to figure out and a higher fee paid out of band.
Increased Time, and money cost is the point, and is demonstrated here.
Yes.
You are free to run, or not run filters.