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I don't hear Jens using the words "current ripple" in this video.
What I did find interesting in his video is how well the old PSU's held up in the ripple test. Old "dried up" electrolytic capacitors have increased internal resistance called ESR. Increased ESR causes increased ripple. I have actually tested some 30+ years capacitors in my A500 and the ESR was fine.
I think that the stories about bad electrolytics are often overrated. I still use them quite a lot in the circuits I design.
A lot depends on the manufacturer and how the caps are used in the circuit.
Stick with the likes of Rubycon, Panasonic, etc. Keep the ripple current low and keep them cool and they will work forever.
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