Let’s put this to rest once and for all, shall we?
BIP-110’s purpose is NOT eliminating spam. It never was, although reducing spam is an expected side effect.
BIP-110’s purpose IS narrowing multiple attack surfaces (seven, in fact) introduced across two Bitcoin protocol upgrades and several Bitcoin Core client updates over the span of nine years.
In essence, BIP-110 is not a typical Bitcoin Improvement Proposal - it’s a long-overdue security upgrade. And like any responsible security upgrade, its scope is intentionally limited and conservative (temporary in nature).
People who are afraid of it either haven’t done the work to understand it, or are arguing in bad faith. A small but vocal minority is genuinely concerned, because this security patch will disrupt their grift for 12 months - possibly longer if BIP-110 succeeds as its advocates hope.