I'm worried about it for sure. However, it looks like this article is using Brian Heywood's local polling, not someone impartial or vetted in any way:

Polling conducted by Let’s Go Washington shows its initiative passing in November, with 56% of the vote in favor of banning trans girls from girls’ sports. That data, which has yet to be released publicly, shows approval from 73% of Republicans, 48% of Democrats, and 52% of Independents. Let's Go Washington said it queried 7,500 people for the poll.

I don't trust anything Brian Heywood says.