That sounds like a potential slippery slope to severe abuse. So if the courts decides that Americans have the right to being handed $1 Million at age 18 and it was a previously non-enumerated right that does seem like an abuse and overreach of power...at least in my eyes.
But the subject that first came to mind was gay marriage. The progressive argument is that Americans have a right to marry any person the want and argue that by denying that one is restricting the rights of others. The problem is, firstly, that is not the definition of marriage. What liberals want to do is change the definition of marriage. Secondly, heterosexuals do not have the right to marry anyone they want either. They can not marry someone of the opposite sex, they can not marry their children, they can not marry multiple individuals, they can not marry an animal. If the basis for marriage is changes to being able to marry any mate one wants then all these alternatives must also be allowed because the basis of marriage will then depend only upon marrying anyone one wishes. This is a "right" that has been voted down myriads of times now but in several states has been created as a right by judicial fiat.
It is subject to abuse, but IMHO it is necessary in order to protect our rights. The main opposition to the Bill of Rights was that it could be construed to be all of our rights, thus th 9th Amendment.
I consider few of the left's arguments progress - certainly not gay "marriage". It seems more regression into a dissolution of civilization to me. I refuse to use the word "progressive" to describe the left.