Yes, I agree, atoms are uncuttable. What is incorrectly called an 'atom' by those currently allowed to get credentials in physics is really a conglomerate.
Indifference is a "chicken and egg" situation. Elite educators consider themselves curators of the Overton window.
The many and frequent critiques of Epicurus brought forward by academics (for example in Oxford's 800 page Handbook, published 2020) do not show scholastic indifference but formal opposition. They know who Epicurus is, but he is heretical to their system. They ignore producing translations and only produce critiques, and the critiques they put forward against Epicurus are now being repeated by the public.
There has been a demonstrable effort to bury the Epicureanism scholarship that had started before the world wars. Very little has been done by them since 1950's even though pulic interest has been organically increasing.