Chrome was pretty great as well, it was desperately needed.
I don't have enough information to judge how much of Chrome was original work and how much was pre-existing work. Though I guess by now, after nearly 20 years, Chrome's codebase looks absolutely nothing like KHTML.
Nevermind the controversies of silly ad campaigns and CEO salaries and whatnot.
Mozilla should have just reinvested all the money into Firefox. Heck, they couldn’t even finish their rust-based rendering engine.