Agree about press-fit being solely for convenience and savings. Same as straight-sided carbon rims for tubeless.

Agnostic about straight forks. I've never been able to detect any difference in the ride between my bikes with straight forks and those with raked forks. It's possible that savings was behind the introduction of straight forks, but (IIRC) Colnago was the pioneer, so I guess it's also possible that the motivations was to provide some sort of performance advantage. Italian racers weren't put off by them.

(The first one I ever saw was on a bike a friend bought from Dutch pro Erik Breukink. I was agast at the sight of a pro-level racing bike with a straight fork, but I eventually got over it.)

Disagree about sloping top tubes. Just checked the first current popular road bike that came to mind, the low-mid-level Specialized Allez Comp, and it comes in seven sizes, mostly in 2-cm increments, same as in the days of level top tubes.

Advantages of sloping: greater stand-over room and/or (potentially) higher handlebars (bot are especially great for aging road riders), slightly reduced frame weight.

Advantage of horizontal: more aesthetically pleasing to those of us who imprinted on traditional geometry.

That said, despite having owned maybe 20 steel road bikes since 1963, I've gotten accustomed to sloping top tubes and large-diameter tubing, to the point where skinny tubes look a little ramshackle to me. But then, I never minded the look of unicrown forks.