This blog will help you to create your own customer attributes in Magento 2 programmatically which allow adding more specific properties.First of all, you should have your own Magento 2 Extension. See how to create your module here.
Step 1: Create InstallData.php file
Step 2: Modify data input for each kind of attribute
Step 3: [Optional] Customize layout
I have done using below way
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
Just in case someone comes across this old question and wants to do this without coding...
We published an extension for Magento 2 that allows to disable/remove, but also sort Customer Account Links by Configuration from Backend:
For more details please see Customer Account Links Manager Extension