Holding sbtc carries a higher risk than holding wbtc because of the additional complexity of the collateralized system. The sbtc is backed by snx tokens, which form part of the collateral for the Synthetix platform. This means that if the value of snx tokens drops, the value of sbtc could also drop. This added complexity can make it difficult to assess the risks associated with holding sbtc, which is why it is important to do your due diligence and research the risks before investing. Additionally, it is important to consider the liquidity of sbtc and the potential for slippage when trading. It is also wise to diversify your portfolio to spread out the risk and to ensure that you are not over-exposed to any one asset.