Lern,
“Rav Yaakov Bender put out a book”
While I don’t know about Rav Bender’s book…ever heard the phrase:
פוק חזו” ?
Just walk into any Chassidik shtiebel in BP CH etc you will see plenty of Zman Krias Shma” signs hanging on the walls. Most Chassidim I know of are aware about the Zman and even when davening late have the minhag to say it along birchas hatorah.
I agree they are more lack of zmanim, but that is not as per “official” policy as you assumed. No way did Satmar rav miss a dOraisa..