The problem I have with these statements is that they make broad statements about a group of people which are false. Try an experiment as you read each of the myths, substitute the word "women" or the word "Black" or whatever minority group you can think of, where the word ageing is placed. We have to reject myths that stereotype any group, because it is wrong. However, as more Boomers retire and continue to enjoy life to the fullest as do the people I work with, these myths will slowly fade into distant memory.
While we do share responsibility for certain parts of aging like taking good care of our health and our finances—the choices, options, and abilities are not equal for everyone. Depending upon our sex, our race, our education, and our socio-economics, we either have advantages or disadvantages that should be considered. This is an interesting point, the seniors I have met, believe that at every age, the individual has responsibility for their health, their finances and choices. We know that options and abilities are not the same for everyone, but we understand that this is true no matter your age.
Seniors who work are taking jobs away from young people and adding nothing to the economy.