No, the upload limit is impacted by your upload activity; not by the total data you have stored in Evernote.
In fact, there is no limit to the total data you have stored in Evernote
Every time you edit a note, it is uploaded to the servers and your allowance is adjusted (exception for Local Notebooks)
Also see: https://help.evernote.com/hc/en-us/articles/209005827-FAQ-for-upload-limits
@South Ghost Looks like @jefitoand @DTLow were able to answer your questions.
You may also find this resource helpful:
If you have any questions, please feel free to reach out to me directly!