There must be loads of electrolytic capcaitors that get produced, and then end up in storage for 3 years or more, before getting sold.....and they dont have the dates on them, so they probably get sold as though they were knewly made.
...But you dont hear about products blowing up at switch on....so i actually wonder if this is a ruse by the El cap industry, to get more sales of el caps.
I think you do get higher leakage at switch on if theyve been stored for 3 years plus.....but i suspect that with modern el caps, the leakage still isnt that much...and after half an hour its died down to almost nothing.
If this leakage current problem was genuine, then you'd have youtube videos of people putting voltage on a 3_year_old plus el cap, and showing its temperature going sky high....but there is no such video.