Nobody wants to kill ASICBoost. Literally the only thing people think is a good idea, and the purpose of this post:

https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017...

.. is to close off only the covert ASICBoost mining incentive which is directly incompatible with a host of high-quality Bitcoin improvement mechanisms. (An incomplete list of which is in the above link, near the bottom.)

Overt ASICBoost is completely wide-open, and remains untouched. In fact it's completely compatible with SegWit.