Did you find Migrate to /e/OS linking [HOWTO] Import contacts from Apple to /e/ cloud in
It is not using the .vcf method, but an icloud method.
I have no experience of the apple world. If you want to use a .vcf method you might check what version of .vcf you are using. I am not certain if /e/ specifies version >3, or if there are other constraints.
Years ago I used GitHub - jowave/vcard2to3: Convert vcards from version 2.1 to version 3.0 this threw up some unexpected things I was able to delete in a spreadsheet, then return the copy to the script.
You might just try running a copy of your .vcf through the script after you checked out you thought it safe and suitable.