• No More Forced Restarts: This is a huge relief for many!. Firefox on Linux no longer requires a forced restart after your package manager applies an update. This means smoother, uninterrupted browsing, even during system updates.
• Reduced Memory Usage: ForkServer leads to a significant reduction in memory consumption for content processes. The base resident memory for a content process is now around 50% lower. This helps Firefox run more efficiently, especially if you have many tabs open.
• Faster Process Startup: You'll notice that content process startup times are reduced by approximately 35%. This translates to snappier new tab openings and overall improved responsiveness.

Sounds actually too good to be true to me.