It will be pretty bad for young folks in general if Fannie and Freddie are released from conservatorship. If anything, they should be dissolved entirely. Releasing them will create a privatized monopoly and further inflate housing prices. This would be really great news for several dozen ultra wealthy folks, moderately good news for existing home owners, and bad for anyone else.
Low rates do not lower home prices-- they just let people borrow more and inflate home prices. One possibility is that artificially low rates rise to market rates...and home prices fall commensurately, or rise less to accomodate.