I'm also seeing them get through quite a bit on 1.3.8 (iOS 14). I cleared website cache and settings, still seeing them. Content blocking set to "Full". It's usually these AdChoices ads, but I may just be noticing them more because of the logo
Sometimes I can see the content area (particularly the bottom bar) grayed-out, as if the content is being blocked, but not the content area (I'm forgetting the word).
They're properly blocked without a residual element box showing when using Safari with Wipr
On macrumors (Orion):
Same site, Safari with Wipr: