If you know that a cap is suspect, and the article mentions what are probably helpful sources like badcaps.net, then you can accelerate the aging process by running the board in question at 10-20% overvoltage in a temp chamber heated to 100C or whatever your design's edge case is. MBTF values assume nominal voltage and temp, so increasing this has the effect of decreasing the mean time. This is not 100% guaranteed, since you are tweaking parameters of a statistical formula, but you nevertheless stand a good chance of weeding out a particular brand/model cap if you test multiple units and compare the results to those from a control group. A past job did exactly this to qualify part substitutions, and this sort of testing is effectively a requirement for temp-sensitive parts like caps. We were able to successfully weed out bad caps with this testing.