It is still celebrated today, every April 23. In fact last year there was a new English coin depicting him. There was also an exhibition I believe in Belgium, "L'Homme, Le Dragon et La Mort, La Gloire de Saint Georges' at the Contemporary Arts Museum, 2015 (The Man, The Dragon, and Death, The Glory of Saint George.) Thousands of pieces of art through the centuries are of him.
As my four year old granddaughter Addie just said as she gave our dog her favorite stuffed animal to chew, "You can only be mean to toys and bad guys!"