@Debandez your commitment to helping others and trying to alleviate needless suffering due to poor advice is fantastic. In your post you switch between monitoring and testing once or twice. Pressing for monitors to help to monitor and adjust is absolutely good. Reading through this thread most mornings, seeing it as a test does seem to cause some anxiety - I would say don't call it testing.
The advice does seem to be showing its age but I don't know when it was first issued and I was certainly never given any advice whatsoever on diet. I imagine pointing out that science and managing T2 in other ways is evolving rapidly which means it would be appropriate to "revisit" the advice. This may be better received.
Just because something can be measured it does not automatically mean it can be managed but it does make it far more likely and is far more likely to save easily avoidable pain, suffering, potentially death and expense and extra, avoidable, work across the diabetic population. The monitor needs to be supplemented with a course/workshop on using it and what you are looking for - what post-prandial rise to aim for , how one might achieve this (with good examples from real people) and factors which affect this and fbg. A better course than DESMOND or whatever you guys had. Just my thoughts to add into the mix.
Anyone seen or used this
https://www.england.nhs.uk/2019/05/online-diabetes-support/ I have certainly never been made aware of this despite being in an area where it available. Support what you do just offering my thoughts.