Mr. Kuplevatsky,
I’m been a WordPress user since October of 2011. This has been a continual end-user request for both Default, and Developer Themes ever since then. Since the Core implementation of the Theme Customizer, SOME theme Developers have offered an option to un-select the integration of Featured Images into the individual posts themselves. As far as I can tell, NO themes offered by Automattic currently offer that option in the Customizer.
I agree with you that it is Very Irritating not to have that option available, and believe that ALL new themes filtered through the Theme Directory should have that option offered in those theme’s Customizer.
(I know that this comment will probably irritate quite a few Theme Developers).
As you, just today I also have made a similar request for a different theme:
https://www.ads-software.com/support/topic/featured-images-location-and-sizes?
https://www.ads-software.com/support/topic/how-do-i-get-featured-images-not-to-display-in-individual-posts?
