The problem is Polygon's general unreliability and lack of end users. Almost no one I know ever has any cash on Polygon. It's either Solana, ETH, or something like Arbitrum
I've noticed occasional issues with Polygon, which is frustrating, and some intermittent viem/Metamask errors that I only seem to get with Polygon. I've put it down to the immaturity of the web3 stack for now but it needs to get better.