Sorry once again my attempt at sarcasm appears to have been underwhelming, I better look into using a sarcasm tag.
No worries. It wasn't entirely lost on me. And I am being serious in that I think she's trying to gin up support for precisely the sort of specious argument I outlined.
Quite honestly, if that argument were valid, it would prove too much, and would mean that Congress has the authority to directly regulate everything under the Commerce Clause, since just about every human activity has some sort of potential economic effect and, therefore, in the aggregate, everything everybody does has an effect on the national economy.
For example (and yes, this is a totally specious argument): allowing people to avoid the annual flu vaccine voluntarily is likely to lead to more people getting the flu, which will mean that more people will be taking time off from work for sick days, thereby reducing aggregate economic output, and more people will be buying more tissues to blow their noses with, thereby resulting in greater sales of kleenex than would be the case if everyone got the flu vaccine. Accordingly, each individual's decision whether or not to get the flu vaccine has a negative economic impact, and can therefore be regulated by Congress directly under the Commerce Clause - i.e., under the Commerce Clause, Congress can mandate that everyone get the flu vaccine each year.
Pretty damned stupid if you ask me, but that is how the left would like to use the Commerce Clause.