Theravada using mostly Vinaya and 4 Nikayas

There is a Buddhist monk from Theravada tradition that only follows Vinaya and the 4 Nikayas, he avoids talking about Abidhamma or other sources like Jakata Tales, he said some later stories contradicts the Buddha's teachings and gave some interesting examples, he also avoids the commentaries. He claimed the true Dhamma the Buddha spoke of before dying (to be the teacher) were the Vinaya and suttas in the 4 Nikayas. I would like to know, is there a tradition inside theravada that follows this logic? I couldn't ask if he was following a particular tradition/school or if it was just his personal view. I would like to understand and explore it.