It depends on how you look at it. Strictly speaking, a "mint" is a place that makes "coins" and "coins" are legal money. What the Franklin Mint made was collectable "medalions" with no government backing. Along with other "collectables". But there is no law saying you cannot call a place a "mint" if you want to, so there you go.
While this outfit is apparently slowing down, there are many dozens of similar hucksters who sell medalions; foreign stamps, coins, and bills; and cheap brick-a-brack for many times their actual value, under the guise that they are "collectible".
Sadly, the actual US Mint and BPE have a contract with a private huckster that sells various actual US coins and bills as "collectables" vastly overstating both their current value among those in the hobby and their potential for appreciation .