I wasn't even aware Seattle pulled people over for speeding much at all. WSP on the highways yes, but on the city streets there is not really any traffic enforcement by cops (outside of parking).

Seattle went from like 40k/yr moving violation tickets to 3k/yr over the last decade-ish.

I think GP might have been talking about the proposal to split parking enforcement out of the police department: https://mynorthwest.com/3093949/seattle-council-votes-move-p...

Which yes, was undone: https://www.theurbanist.org/2022/11/23/council-returns-parki...

But also only tangentially related to speeding enforcement.