Like all of these threads, there are truths and falsehoods. With some of these numbers, you have to know it's either bullshit, or it's not the whole story.
Obviously, two big incomes, a large inheritance, windfall in market(rare nowadays), side businesses, real estate, etc. will screw the numbers.
A family of 4 with 2 kids, 125-250 in income with usual expenses and living within their means isn't saving a million by 40.
Mine 65, 35 yrs in pharma sales, 1.5 million in 401k, Roths, etc. 350k in home value,
50 k in savings. 2k mo. Wife and My pensions. Govt healthcare plan costs us 80bucks/mo out of pocket.SS will give us 45k next yr. with expenses of 40k, we'll be very comfortable without withdrawing a dime if we don't want to. Don't want a sailboat, world travel, or a vineyard. Love spoiling our grandkids.
So rest easy. You can live very well in retirement on a lot less than the financial boys tell you