Someone should make a service like this except you actually upload the file directly to the other user rather than uploading it to a 3rd party (encrypted or not). Yes I get you would have to wait for the user on the other end to connect to you before the transfer starts but if you’re uploading 100+GB of data you’re going to be leaving that browser tab open for awhile anyways.

What exactly are you removing from urls? It sounds like you need a tailored script that does a simple string replacement for you.