What is the difference between present-day Buddhism and the teachings of primitive Buddhism?

In fact, there is no fundamental difference between the teachings of present-day Buddhism and those of primitive Buddhism, which are the Four Noble Truths, the Twelve Noble Truths, and the Thirty-seven Noble Truths. There are only some differences in the way the Dharma is propagated and in the way the mind is initiated. Theravada Buddhism maintains more of the original characteristics of Buddhism. Mahayana Buddhism, such as Chinese Buddhism and Tibetan Buddhism, advocates the addition of bodhicitta to Theravada Buddhism's self-correction, but otherwise there are no major differences. It is inaccurate to say that Mahayana Buddhism added a lot of mantra chanting and more Buddha worship and polytheism. Mantras were very prevalent at the time of the Buddha, and Buddhism was supposed to use them as a means of accepting the masses. As for the Mahayana worship of many gods there is even less to talk about. The so-called distinctions are definitions made by historians based on Southern Theravada descriptions and the sequence in which certain texts were discovered. These statements can be ignored in the context of Buddhist beliefs.