I agree, thanks.

FWIW I’ve never been a fan of the ‘reject’ message, or its implementation.

https://github.com/bitcoin/bips/wiki/Comments:BIP-0061

e

On Oct 18, 2019, at 18:46, David A. Harding <dave@dtrt.org> wrote:

On Thu, Oct 17, 2019 at 01:16:47PM -0700, Eric Voskuil via bitcoin-dev wrote:
As this is a P2P protocol change it should be exposed as a version
increment (and a BIP) [...]

BIP61 is explicit:

“All implementations of the P2P protocol version 70,002 and later
should support the reject message.“

I don't think a new BIP or a version number increment is necessary.

1. "Should support" isn't the same as "must support".  See
  https://tools.ietf.org/html/rfc2119 ; by that reading,
  implementations with protocol versions above 70,002 are not required
  to support the reject message.

2. If you don't implement a BIP, as Bitcoin Core explicitly doesn't any
  more for BIP61[1], you're not bound by its conditions.

-Dave

[1] https://github.com/bitcoin/bitcoin/blob/master/doc/bips.md  "BIP61
[...] Support was removed in v0.20.0"