Northern Ireland Protocol Bill

The shadow Secretary of State has made much of the Government abandoning their obligations, but surely the obligation in the protocol was designed from the EU’s point of view to protect the EU single market. How does this Bill not give that guarantee to the EU, when goods going into the Republic will be checked, when there will be severe penalties on those who try evade those checks and when any firms producing in Northern Ireland will have to comply with EU rules when they are sending goods to the Republic? Surely that safeguards the single market and the obligations will be met.