This debate is as old as that page and in those 20 years everyone's got used to channel bugs and it's not really an issue any more
Pressing something to find out what channel you're watching is an active process. Very few people care what channel they're watching but the channels want them to know. Having the logo on the screen all the time makes it passive not active.
I think you're missing one crucial thing about what's happened over the last twenty years, or to be more precise over the last ten years, as channel DOGs
have generally gotten smaller, more translucent, and have been moved much further into the corner after the axing of the 4:3 safe area. If the BBC introduced large, colourful, bright DOGs on their channels, I can bet there would be complaints. Some are so small and indistinguishable, like ITV's, that you wonder why they even bother.