Nothing about that interpretation is new, thus plenty of high-profile journalists, and journalistic NGO [0] have already responded to that particular "charge" back in April. Like Glenn Greenwald pointing out that "massaging sources" is a major part of investigative journalistic work [1].
[0] https://rsf.org/en/news/rsf-calls-uk-protect-role-journalist...
[1] https://theintercept.com/2019/04/11/the-u-s-governments-indi...