There is an interesting article by Gil Frondsal in which he discusses his take and teachings on Buddhism.
Naturalistic Buddhism (Gil Frondsal 2022)
https://www.insightmeditationcenter.org/2022/12/naturalistic-buddhism/
He suggests a combination of Theravada and naturalistic Buddhism is possible.
What are your views on that?
Also: is there something like Theravada Modernism?