and it's not even possible to hide?
You can hide for users through CSS. But this will remain in the code, which is bad for SEO.
Then this useless custom title I have to manually enter can be split into two rows but I can't center it and I can't make it into a link?
Article Addon cleans all formatting. Therefore, you will not be able to use custom title in Article Addon from the box.
Here is the redone Article Addon in which the formatting purification was deleted. This is for SP PB 3. I have not yet checked in SP BB 4.
https://www.dropbox.com/s/dt0e0uvoyx2keot/articles_format.zip?dl=0
Create the structure of folders templates/your-template/sppagebuilder/addons and unpack there.
After that, you can find this addon at the bottom of the addons list (SPPB 3)