InfoPath 2010/13 Migration not supported for "modern" experience

Hi

I've got to know that InfoPath 2010/13 will not be migrated properly (or at all) for "modern" experience lists. 

See following articles:

https://docs.microsoft.com/en-us/sharepoint/dev/solution-guidance/modern-experience-customizations-customize-lists-and-libraries#overview-of-customization-options

https://docs.microsoft.com/en-us/sharepoint/dev/solution-guidance/modern-experience-customizations-customize-lists-and-libraries#overview-of-customization-options

It seems to be we can migrate to "classic" experience (basically instead having a modern site, if you have a classic site, migration will work).

I'd know WHY modern experience does not work? I dint find anything other than "it is not supported as of now". Appreciate a response.

Thanks

Thanuja