There is a difference
I was thumbing through some 1950s Consumer Reports over at Roger's the other day, and indeed, through some 1980s issues that I'd rescued. It's not your imagination; the articles have become much more concise, and the volumes of test setup and execution information that used to fill pages has been condensed to mere footnotes in the ratings section, if anything.
Perhaps it's a change to compliment our supposedly instant-gratification generation, but a large portion of the interesting information (what we, probably, deem interesting) has been omitted.
It could just be that they grew tired of reiterating the same thing. Or, perhaps, they think no one cares about the minutiae. Alternatively, maybe we wanted to know more back then about the aesthetics of driving a 1986 Oldsmobile Eighty Eight, or about the agitator design of a Magic Chef that made it so amazingly capable. Remember the ratings format in those days? Advantages, A,C,D,E,Q. Disadvantages: a,c,i,l,m. What was m? "Lint filter judged harder to clean than most." Read all about it underneath.
Maybe people just want to know what to buy now, and that's it. To a geek like me, that seems kind of shallow. After all, half the fun was in understanding why you'd care about the ratings in the first place...