In the picture it looked fake but I see it's from Josh's frogs, so maybe they're real. The problem with putting things in a beardie tank is that they are big reptiles and will probably destroy any plant you put in there. The aloe is a succulent, so it will work in a leo tank under the following circumstances:
--you'll need lighting so the plant won't die
--Your best bet is to pot the plant and then take it out and water it every week or so.
Pretty sure that one's fake, nothing wrong with a nice-looking fake plant though. You could put real aloe in there too but succulents need a lot of light.