Stader abstracts away the challenges and risks around maintaining staking infrastructure by allowing users to delegate their MATIC to professional node operators.
Staking with Stader assumes greater security risks as the underlying smart contracts may be exploited. The treasury for Polygon MaticX is also controlled by a limited 2/3 multisig.
Stader's liquid staking protocol offers you a great way to stake your MATIC and earn rewards for securing the Polygon network while remaining liquid with MATICX.