Unfortunately Maya smart extrude is just not as good as Max's even tho it is from same root. Just like Nitrous vs Viewport 2.0. The fundamental matters. Try smart extrude in Max and Maya. You can tell the difference.
There are some interesting modeling improvements in the latest maya. As you can imagine they arnt perfect. If someone finds an issue with a mesh and smart extrude please post it here. https://help.autodesk.com/view/MAYAUL/2025/ENU/?guid=GUID-21E37C98-B7CA-4B9A-9883-8276FD8AB819