That's my point. How do you know? You have not kept tortoises long enough to see whether their advice is good in the long term, that will come with your own experience.
I am not saying that they are not offering good advice, but to my mind being so blinkered to anyone elses point of view for someone as new to this as you are can be a dangerous thing.
What would your views be if this was a few years ago and tort tables were a fairly new thing? No doubt you would be a staunch defender of vivs as that would be what the majority recommended.
I know you have done your research and good on you for that, but never assume that he (or she) who shouts loudest is always right

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Valid point but unfortunatley little research has gone into tortoises so until then we have to take the most long standing and reliable infromation we can the tortoise trust. And considering all their tortoises live to a long and healthy age there not doing anything wrong even if there over careing so theres no harm in following there lead. But following blindy is a dangerous thing granted after all listening to the majority of pet shop owners who at the time are seen as being experts and all knowing they often give incorrect information.