A large number of poorer elder people will be in dire financial straits, forced to work beyond their ability to do so and unable to pay for health care.
However there are also a smaller number of extremely rich baby boomers and a very large number of comfortable middle-class ones. The former will obviously pass on large amounts of wealth. The latter have been forced to save large amounts for their old age, because they have known since middle age that the state would not provide for them very well.
In some cases they have decent final salary based pensions and other very good retirement benefits, no longer available to younger generations. In other cases, they have invested significant sums over the last decades and also made large investment gains.
This group has tended to save for the 'worst case' scenario - a long retirement of leisure spending, followed by drawn out old age with significant care needs. Most of them will not need all this capital - they'll either die younger than expected, or have better health into their 80s and 90s than they feared. The excess will be handed on to their children - and will be a significant source of intra-generational inequality in the future.
Remember also that middle-class baby boomers remain an electoral 500-lb gorilla. Governments have been very reluctant to claw back their benefits and care provisions as fast as has happened to other groups. In some cases they will be provided for better than expected when they planned for retirement.