Whist I fully agree with the 'wonkyness' of root metrics and the Ofcom report I'm calling you out on your absolute total BS. Mainly due to a lack of understanding how the technology works. It's true that a little knowledge is a dangerous thing.
I agree with EE that your comments are libellous. I used to work for an independent company which tests Tetra, 2G, 3G & 4G networks in the UK and in many other countries too. I can safely state your comments are absolute tosh.
It's worth knowing that an independent company are paid to perform over 30,000 test calls per month on the 'EE' network alone using custom build hardware that's in use on over 50 mobile networks worldwide. The raw data simply does not back up your statements.