

Adding to what others said:
Mobile browsers are very performance sensitive, compared to desktop. Adblocking extensions (in my experience) slurp battery, but native implementations use much less, hence other mobile-focused browsers (like Orion and Cromite) already tend to use native adblockers.
But it probably doesn’t matter as much on desktop.








Take the benchmarks with a grain of salt.
…And even then, performance differences like that can feel trivial on modern desktops.
But yes. Even in some real world situations of mine (like text boxes with 50K+ words), I find FF extensions really bog it down.