Hmm, I agree with you 100%, but power of defaults is how big companies get average consumers. Maybe Firefox should make it default with a setting to turn it on?
A setting titled "allow copying of tracking data", a lot of people won't allow.
Links support parameters for a reason, and I promise you that the main reason isn't tracking. They can convey important info like the language, search parameters, a specific comment, etc.
Removing them willy-nilly by default is going to cause issue sooner or later, and then people are going to blame Firefox for "not working" and are just gonna switch to Chrome because "it just works".
If you wanted to do this and make it default, I believe you should be able to do so using userChrome.css. You won't be able to change the text, but you can remove the old menu item.
I just want a shortcut for "copy without tracking" on the current tab instead of having to use the context menu. I'm fine with it not being "Ctrl+C," as long as it's reasonably easy to remember, like maybe "Ctrl+Shift+C" or even a sequence of commands (i.e. select address bar, then special copy command).
Likewise, there should be an easy way to open a link without trackers, like "Ctrl+shift+click" or something.
Or at least the option to make it the default. I could see some situations where someone may want to test a link with non-identifying parameters (like identifying the campaign source), and not wanting to have that stripped from the URL by default.
But I get you, from a consumer perspective I'd also want it as my default.
In the meantime, there's ClearURLs or uBlock Origin with filter lists.
I think it's a combination of things, a basic approach of removing the query string (after the question mark) with exceptions for different sites that might need some of the query string.