While it may have been years (decades?) since I've had a beverage that I needed a cap remover before I could enjoy it, I have used the screwdriver portion of that blade many times.
As for the can opener ... the canned foods I could afford (generic and house brands) when I was still preparing my own meals rarely had that new fangled pull tab or key open. SPAM, Sardines, Smoked Oysters, Cuttlefish, and Octopi being the exceptions. Canned shrimp still needed the can opener, if I recall correctly. (no guarantees)
Still, that (one piece) post WW 2 can opener on the Scout/Camp/Demo knife is the best I've found. (The SAK can opener is a close second place.)
Also, the cap lifter/bottle opener and can opener can both be used as a precision scraper. The cap lifter/bottle opener can be used to pry open a can of varnish, stain, or paint. (the leather punch can double as a handy dandy awl) Thus they are worth having, and are not "obsolete", "worthless" or "useless".
The one "blade" I've never had much use for is the cork screw. I
might have used it once in all my 65 years, and that was back around 1977 when I had a New Years party in which my then live-in girlfriend and I was the only ones (out of 10 people including family members invited) who showed up. (Yes. I learned my lesson. That was the first and last time I attempted to host a party or gathering.)
I've never been much of a wine/champagne drinker ... on the rare occasions I bought wine, it was in a box and had a screw on/off cap. (last box was about a year Anna half ago. No recollection of when the box before that was ... I'd guess it be close to 40 - 43 year ago. It might a been when the boxed wine first hit the market? (it was legal for 18 and over to join the military, learn how to get shot at, how to shoot back, and get a beer(s) and/or shot(s) of Rye whisky, Jack Daniels, or even wormy Tequila, when I bought my first box of wine.)
Until Victorinox brought out/invented that itty bitty screw driver that screws into the cork screw, I had no use for one.
(I still "need" (note quotes) to get one of them itty bitty screw drivers ...)