The risk is that if a kickback occurs while you are gripping on the work piece, it could pull your hand and arm towards the saw. You will not react quickly enough if a kickback happens. That being said, since the parts are longer, if you are keeping your arm far enough away that a kickback couldn’t pull you close enough then I could see the cut being done somewhat safely. Still, I would say that an outfeed table or roller stand is a worthy investment to make long cuts easily and safely.

I’m a cabinet installer, and I use a table saw every day. Do not put your hand anywhere near the saw blade when it is running. Use push sticks and never pull a part through from the back of the saw. If the cuts are getting harder to make, put a new sharp blade. Dull saw blades are the most dangerous and cause most kickbacks. You’re smart to respect the dangers but with care and attention you can use them without much risk.