Warp Stabilizer works, Rolling Shutter works, Morph Cut works, Pugetbench works... patching only the needed original libraries/plugins to make Premiere think that it works on a genuine Intel CPU... no libfakeintel, no environmental variables involved.
Just replace AEFilterMorphCut into:
/Applications/Adobe Premiere Pro 2021/Adobe Premiere Pro 2021.app/Contents/Plug-Ins/Common/AEFilterMorphCut.bundle/Contents/MacOS
AEFilterStabilizer in:
/Applications/Adobe Premiere Pro 2021/Adobe Premiere Pro 2021.app/Contents/Plug-Ins/Common/AEFilterStabilizer.bundle/Contents/MacOS
AEFilterRollingShutter in:
/Applications/Adobe Premiere Pro 2021/Adobe Premiere Pro 2021.app/Contents/Plug-Ins/Common/AEFilterRollingShutter.bundle/Contents/MacOS
AEFilterMorphCut.zip
AEFilterStabilizer.zip
AEFilterRollingShutter.zip