While most of the provided sources establish Polygon's role as a scaling solution deeply integrated with the Ethereum ecosystem, one piece of evidence from Bitget directly supports the statement. It references a headline: 'Polygon CEO says L3s are taking value away from Ethereum, sparking debate.' This comment represents a clear expression of doubt or concern about a development within the Ethereum ecosystem, which substantiates the claim that the CEO has expressed doubts about loyalty to Ethereum's value accrual.