Google Doc and Dropbox link

I need some clarification.  I am new to Dropbox.  I wanted to move my files from google drive to Dropbox.  I felt creating, editing, and sharing my files in Dropbox would be easier to share files and gain additional storage space.  I do have a google workspace account.  

I use Grammarly and found out it does not work in Dropbox.   Also, I see we got a note that the google docs will now have a link to google drive.  I am not sure what that means.  If I delete a file in google drive will it erase it in Dropbox if it is a link? 

Questions:

1. Is there writing software that works when creating new files in Dropbox? 

2. How will the link to Google Drive docs affect my move to Dropbox? 

Thanks,