@Pencils You claim that the Select Committee didn't listen to evidence given by organisations such as BAGIS... but that is simply not true!
From the committee report:
Dr James Barrett, President of the British Association of Gender Identity specialists (BAGIS) stated that: “The casual, sometimes unthinking trans-phobia of primary care, accident and emergency services and inpatient surgical admissions continue[s] to be striking.”
Dr Barrett reported: A matter of serious day-to-day importance at a primary care level is the persistent refusal of some General Practitioners to even make referrals to gender identity clinics.
Dr Barrett, of BAGIS, told us that this unwillingness: is most disastrous when the General Practitioner concerned sits on an important committee and sets the policy for a wider area. One such General Practitioner sat on the committee covering all of one of the Home Counties and as a consequence not a single General Practitioner across the entire county [of] Buckinghamshire is “allowed” to prescribe for any trans person, ever, including after discharge and into old age.
...the informed-consent only model is not used in any other area of practice within the NHS.
All of those are precis of evidence given by BAGIS... And here is the reference to the bit you found:
The press have reported cis-gendered males claiming to be trans in order to obtain privileges and Dr Barrett, of BAGIS, suggested that there might also be other more varied, and sometimes sinister, motives. The Prison Reform Trust, however, felt that the numbers of prisoners in this situation, and the challenges they posed, might have been “exaggerated”.