Because using the GET parameters (everything after the questionmark) for tracking isn’t their originally intended purpose. Which means that there are many sites that do not use them for tracking.
A classic is search engines having the search parameter and page number there. If you were then to copy such a link without the parameters you would just end up on the homepage.
Now, Firefox probably has a list of common tracking parameters and common “legitimate” parameters. But those cannot be guaranteed to be 100 % correct. Leading to the error of someone intending to link to a specific page but ending up linking to something more generic.
Because using the GET parameters (everything after the questionmark) for tracking isn’t their originally intended purpose. Which means that there are many sites that do not use them for tracking.
A classic is search engines having the search parameter and page number there. If you were then to copy such a link without the parameters you would just end up on the homepage.
Now, Firefox probably has a list of common tracking parameters and common “legitimate” parameters. But those cannot be guaranteed to be 100 % correct. Leading to the error of someone intending to link to a specific page but ending up linking to something more generic.
@bjoern_tantau Brilliant easy to understand explanation thank you 😃