BACME’s guidance was incorporated into DWP training documents on ME/CFS, where its promotion of the outdated biopsychosocial model and discredited psychosomatic treatments undermines current NICE guidelines. This contribution is seen as ethically problematic, potentially harming vulnerable patients and enabling misguided government policies.

BACME has called for the withdrawal of the outdated Cochrane review on exercise therapy for ME/CFS, arguing that the review's use of obsolete diagnostic criteria and failure to distinguish ME/CFS from chronic fatigue could lead to harmful clinical guidance. The organization advocates for an evidence-based update in line with 2021 NICE guidelines to better serve clinicians and patients.

BACME’s annual conference was held behind closed doors during ME Awareness Week, prompting an open letter from patient advocates accusing the organization of perpetuating harmful treatment practices, including the endorsement of discredited therapies like GET and reliance on outdated clinical guidelines.

On March 9, 2024, BACME published an updated clinical practice document for severe and very severe ME/CFS that has been criticized for endorsing psychologising treatments like GET and CBT. Critics argue that these approaches contribute to the medical gaslighting of patients and further marginalize those already suffering from a debilitating condition.

In October 2023, BACME published its ME/CFS National Services Survey, offering critical insights into the state of services for individuals with ME/CFS. The survey, referenced during parliamentary questions on the implementation of the 2021 NICE guidance, provides data aimed at highlighting regional discrepancies and advocating for better support for a marginalized patient community.