Compiling Firefox on NetBSD (dynamically) takes longer than compiling the kernel, maybe even longer than compiling an entire base system. It's been a long time since I tried it but it just took far too long so I lost interest. Granted, the computers I use have limited resources. Anyway, I gave up on graphical browsers many years ago. It seems I prefer "unsubstantial" programs.
Graphical web browsers from "tech" companies (and their partners, like Mozilla) are too large, too complex, too difficult for the user to control. IMHO.