Ibn Murri was a close student of Ibn Taymiyyah. He naturally shared many of his teacher’s views, including his position on istighatha and seeking the intercession of the Prophet (peace be upon him) at his grave. Ahlus Sunnah lived in an environment where expressing their 'contentious' theological views too openly could result in punishment.
It's funny how all of these other scholars were conveniently ignored to illustrate that ibn Taymiyyah RH was alone in his views :
https://www.ilmgate.org/the-ruling-on-istighathah/
https://barelwism.wordpress.com/2012/10/01/istighathah-seeking-aid-from-other-than-allah/
https://barelwism.wordpress.com/2012/09/05/shaykh-ahmad-rumi-salaf-and-istighathah/
https://barelwism.wordpress.com/2012/04/25/ruling-on-seeking-help-from-the-creation/
https://barelwism.wordpress.com/2011/02/26/istigatha/