Buddha did not reject Vedas. If you review the basic precepts of Buddhism, they are simply Vedic teachings reworded. The famous Buddhist chant of Om Mani Padme Hum speaks for itself on glory of Om (ओम्)– that originates from Vedas and is integral part of Hinduism. https://twitter.com/zenji_nio/status/1311643159898750977

For a snapshot of Buddha’s teachings I give quotes from the Dhamma-pada–

Just as a brahman priest reveres his Yajna, even so should one devoutly revere the person from whom one has learned the Dharma taught by the Buddha. (392)

In Sutta Nipat 503 Buddha says that–

“One should support a person who is master of Vedas, contemplative, intelligent, helpful if you desire to inculcate similar traits.”

These are just a few examples from works of Buddha. if we review the original philosophy of Buddha, there is no evidence of he being A-vedic. Every inch of Buddha is Hindu...Take it or leave it.