When working a post say that has several paragraphs and you want to link certain words to PDFs.. for example:
This is a sample text, you should download my pdf.
Now I want to have the word download link to a PDF I'm about to upload. So I highlight the word download and select upload media. I choose the PDF from my computer. Now it asks for a title. I of course want to label it something that will help me remember what it is such as "How to Build Forms PDF".
But if I click insert it replaces the word "download" with "How to Build Forms PDF". So I then have to manually replace "How to Build Forms PDF" with "download" and while not a challenge for me, telling a client to do that is quite tricky.
The other option being putting the title "download" when uploading the PDF, but then in the media manager when I later need to find that pdf it will be called "download" instead of it's real title. Thus I would need to use the title "download" then after inserting it open media manager again and change the title from download to "How to Build Forms PDF".
To conclude if I've highlighted text and then clicked insert media, the title of the media should be for media manager only and not inserted into the post. If I have not highlighted text then it should use the title from media manager. If WP doesn't have a way of knowing if I selected text then the Media Manager needs two fields one for the media's title and a field for the title to insert.