It was made a sticky because it was 2015 and nothing else in its caliber existed yet.
That's incorrect. It remains the only actively developed browser for OS X Tiger / Leopard, two excruciatingly limited operating system platforms.
For PowerPC Linux alone, there remains Arctic Fox (Pale Moon), SpiderWeb (XUL), InterWeb (Basilisk), Firefox 7x, Firefox ESR 68, GNOME Web, Midori, NetSurf, Links, and Surf, all just off the top of my head.
You concluded that the PowerPC platform, meaning everything containing anything from a 601 to 970 chip, was simply unusable in 2020. I acknowledged the obvious and concluded that the only alive and independent browser for Tiger and Leopard, them included, were all platforms with dead ends.
These are two vastly different conclusions.
47 pages of debate in, and we're still discussing what this hypothetical average user might do.
A comedy show...
You can browse the Web perfectly fine on a PPC as long as you know what you're doing. Objectively speaking, this should be something that makes you have issues with being given advice in general. It all has the potential to conflict.