Consider the intuitively simpler problem of “is something a universal turing machine?” Consider further this list of things that are capable of being a universal turing machine;
Computers.
Conway’s game of life.
Elementary cellular automata.
Lots of Nand gates.
Depending on what you mean by “capable”, I’d add “a bunch of silicon and germanium atoms” to the list.
Depending on what you mean by “capable”, I’d add “a bunch of silicon and germanium atoms” to the list.