In general, it's never correct to run an emulated simulator. This is particularly relevant for watchOS, since x86_64 != i386, so watchOS simulators will run with the emulation logic intended for Rosetta.
<rdar://problem/65644439>
Created attachment 404574 [details] Patch
Committed r264523: <https://trac.webkit.org/changeset/264523> All reviewed patches have been landed. Closing bug and clearing flags on attachment 404574 [details].