I have been doing the audio kit thing now for nearly 40 years and have never had a decent (i.e. recognizable brand) electrolytic capacitor fail in my audio gear.
Computer motherboards and cell phones - don't get me started.
My old S/S preamp (still in use for it's phono stage and shortly to be replaced by Reduction) is about 30 years old and still going strong. I have heard the opinion aired that electrolytics in regular use live much longer than those which have infrequent use - particularly if there are long periods (years) between power-ups. YMMV.
John
Amateur Audiophile and Backstreet Boffin.
Original Foreplay with C4S + Sweet Whispers
ParaSEX amps with MQ nickel-cored outputs
Factory-built Lowther Acousta 115s with silver-coiled DX3s, wired in DNM solid-core
KEF active sub (help for the last couple of octaves).
Bottlehead DAC on batteries.