Your three questions on ~/Websites:
What is that this folder’s supposed goal?
macOS contains the Apache net server (disabled by default) and ~/Websites is the default location for any web pages. I additionally use mine to retailer web pages which do not use an internet server, quite accessed straight from Finder.
Is there any protected means for me to take away it?
You’re having tough eradicating it as a result of it has an Entry Management Record (ACL) with an entry denying delete. Command ls -le ~ exhibits that my ~/Websites has an ACL with only one Entry Management Entry (ACE) 0: group:everybody deny delete.
So earlier than deleting it that you must take away the ACL. I consider this outdated Q&A continues to be appropriate https://superuser.com/questions/299758/what-is-the-mac-terminal-command-to-remove-acl
Use the chmod -N ~/Websites to fully take away the ACL. However first learn man chmod which describes setting and manipulating ACLs and their ACEs.
If I can’t delete, can I exploit it to carry any type of information something I need?
Although you may delete it, you may preserve it and use it maintain something you need.
If at a while in future you have been to allow the Apache net server, the content material of ~/Websites would change into seen. That is perhaps sufficient purpose to not use it on your information with out some forethought.