Mozilla representatives explained why the browser is blocking Google Analytics by default.

Is Google Analytics being blocked by Firefox?
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Representatives of Mozilla, the Firefox controller, explained why the browser is blocking Google Analytics by default. An updated version of the Firefox browser was recently released, blocking all trackers, including Google Analytics.
Does this mean traffic data can be affected when visitors are using the latest version of Firefox?
Mozilla says it is making this change to keep user data private. In a Twitter exchange between Joe Youngblood and several Mozilla employees, the company offered an additional explanation to block Google Analytics.
Google ADS you Firefox
One Mozilla employee mentioned that he personally dislikes Google Analytics, and if this feeling is shared within the company, can his personal feelings about Google Analytics be behind his decision to block it?
Whatever the case, one thing that can't be disputed is the importance of Google Analytics data for businesses and website owners, as Google Analytics offers a wealth of data, and businesses will be in a bad spot if they can't get access. to this data. User traffic in other browsers will be tracked as usual, although this creates a slippery slope.
Now that Firefox has blocked all crawlers by default, who else will follow your lead?
Google ADS you Firefox
UPDATE: According to a Firefox developer, most Google Analytics data will not be affected, which is great news for SEOs and website owners.
"GA analytics functionality (used to prepare reports for a site owner) is a primary cookie. So users will still count on a site's GA statistics, like Apple ITP users."