Clerly you are ignorant. Have you viewed the dollar amounts involved in the payouts from this program? I have a complete understanding of the program.
Yes, I know the dollar amounts involved. Most people covered by private pension plans (who retire at age 65) would not suffer a loss in benefits. Obviously, it depends a lot on your plan's benefit formula, but most private pension plan formulas are not very generous. The PBGC caps straight-life payouts at $4500/mo for 2009. That adds up to a pension entitlement of $54,000 per year. Nowadays, very few people would actually come close to that under most private formulas. Generally, people do not stay employed with the same employer long enough to accrue a benefit that would be limited, and in an old-school dollar amount for years of service plan it's almost impossible.
I work with one plan that pays something like a $40 monthly benefit multiplied by years of service. Even if you work 30 years at the same facility, that still only adds up to $1,200 per month. There are still a ton of these plans out there.
Obviously, under a plan formula that relies on high-three or high-five it is possible to get beyond the cap, but again that usually only affects people who are relatively high-pay and have a significant number of years of service (20+). This group is just not that large anymore in any industry other than unionized manufacturing, and most of those guys aren't paid enough to hit that limit anyway.
Something like 75% of Americans make less than $75,000 per year. Even if a person making $75,000 (and thus in the top quartile) was covered by a decent final-average-pay formula (let's say 3% x years of service), they'd still have to work at the same job for 25 years in order to exceed the PBGC maximum payout. That is pretty rare, nowadays, and anyway, I said in my first post that the cap would affect relatively high-pay individuals, and someone in the top 25% of American incomes definitely qualifies.
I still think your comment was off-base. Actually, you should even be able to admit that. You said in one post that there were no protections for people whose plans are insolvent, and then you later say that you completely understand PBGC protection (a monumental feat, to be sure. Most pension practitioners don't completely understand it, so I got to give you credit for that).