Why isn't "Value type returned by functor not supported." a fatal error?

While working on some functors I encountered and error which resulted in every functor showing:

Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0x237ee717c6cb254c, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H1_MUONCHI2CORR
Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0x1f95d73cf6a16117, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H1_MUONLLBG
Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0x50789ac6864c7177, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H1_MUONLLMU
Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0xe8c206f93b14df2, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H2_MUONCATBOOST
Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0x237ee717c6cb254c, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H2_MUONCHI2CORR
Hlt2RD_B0ToKpPimMuMu                  ERROR Value type returned by functor not supported. Problematic ThOr functor : lambda_0x1f95d73cf6a16117, Functors::HandlesWrapper<>{}, Functors::ServicesWrapper<>{}, Functors::ToolsWrapper<>{}, std::tuple<>{} with field name: H2_MUONLLBG

Despite this the job exited as if everything was okay:

NTupleSvc                              INFO NTuples saved successfully
ApplicationMgr                         INFO Application Manager Finalized successfully
ApplicationMgr                         INFO Application Manager Terminated successfully

Naively this feels like it should be an exception that causes the job to crash though I might be missing something.