Start 11v2 will not be affected by Microsofts policy what so ever. This is because start 11 is an explorer extension and uses windows 11 parts. Other programs such as explorerpatcher function differently as they replace explorer parts built in windows 11's for windows 10's parts instead. The modifications to the Windows 11 explorer is what is being targeted with Microsofts changes in policy. However, the current blocks do not actually prevent windows 11 explorer modifications from happening long term. They are still allowed to function. What they do prevent is for potentially unsupported programs from loading onto 24h2. This is actually a positive because the current version of explorerpatcher would in fact make windows 11 explorer crash because it is not compatible. So the work around here would simply wait until explorerpatcher actually updates the program specifically for 24h2.
Other programs such as startallback already have workarounds so each explorer modification software will be affected to a different degree here. But overall, I will have to say start 11v2 is the safest bet long term as far as start menu replacements go. This is because explorer extensions will be supported by Microsoft policy. However explorer modifications could one day end up blocked completely by Microsoft.