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This is kind of RBF but much more expensive. I don't see this as a threat to be honest.
It's also probably a godsend for transactions submitted to mempool at a stupid low fee that are stuck in a mempool purgatory.
I can't see it getting out of hand because if the tx submitter wanted top priority, they would just set their fee accordingly. This seems like more a lifeline to help get improperly submitted transactions across the finish line.
The better answer is for more wallets to support RBF
Yea, this is just good if you're using a shit wallet that doesn't support fees/RBF properly. Or even if a counterparty is sending you coins, and they set way too low of a fee.
This is also nothing new. There have been transaction accelerators for many years. Having as an option in mempool.space is a nice tool to have, imo.
So what are the wallets that support RBF? Any link ref?
Just did a ddg search and this was the first result: https://cointastical.medium.com/wallets-which-support-replace-by-fee-rbf-fee-bumping-5812c40bbe09
This is a potentially dangerous centralizing force that, if depended upon too much, turns mempool space into a Infura-like cancer. With all that entails.
They're good people, taking a stab at solving a real problem, but this is not a good thing for the network.