Then start a website that weights the polls. RCP doesn’t claim to do so. It provides the poll numbers, the links to the polling companies, and a simple average.
My larger point seems to have got lost. The top of the hour news regularly quotes this stuff, obviously without a second thought as to what it means. It’s like a charming young Boston Globe reporter writing 15 years ago about the scary new mega container ships that carry 80,000 containers.