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Or missing out on new anti-fingerprinting and anti-tracking improvements. Note that adblockers don't generally do the former.
This is the key point. I'm assuming that it downloads the update and then waits for me to agree to install it, but however it works it doesn't interrupt my browsing while I'm in the middle of something.
It's not an issue for these .deb packages because they enable the (experimental) forkserver.
Recent versions of Firefox allow you to block some stuff like that: https://support.mozilla.org/en-US/kb/identify-problems-third...
Though it's possible they use different code injection tricks to make blocking impossible. (You can't block Defender from listening to events for example)
Look forward to trying this out when it becomes available for an OS I use.
Getting macOS to OOM is actually pretty difficult, we probably want to unload tabs before that point for performance (swap!) reasons, but that's also harder to measure very reliably.
Interesting because I have only 5 extensions. The heaviest extension seems to be Dark Reader which causes over 5 point changes.
Not sure if it's a coding issue in the Firefox version of Dark Reader, or it's hitting some slow path in Firefox itself.