Time does not exist. Nothing ever changes. No people exist, including me. I do not exist, and you do not exist. Numbers do not exist.
Numbers do exist, in fact they are the only things which exist.
When you come across crazy views like these, I hope you will have your guard up. It's OK to discuss and investigate what the arguments for these crazy views might be. Often that can be philosophically illuminating. But I hope that you will want to see a really damn good argument for a crazy view like these, before you'll be tempted to accept it. So, too, some philosophers have argued for views that deny there are any objective truths.