Will the implementation be always a binary tree in cart algorithm (Decision tree)?

Question

If I have there or more features in one or more classes.

Is the blog is correct?
👉https://sefiks.com/2018/08/27/a-step-by-step-cart-decision-tree-example/

I would like to request you read the blog & the comments section of the blog.

I will be very thankful , if anyone help me to Come out of the confusion😊