I am careful with the use of fruit,
JAT1, there's absolutely no reason at all why you as a recently dx'd T1 shouldn't eat fruit, but, as you say, use it carefully.
There's a lot of good reasons why T2s shouldn't eat fruit, but there are fundamental differences in T1 and T2 biology which makes a lot of what T2s say irrelevant to T1s on the fruit issue.
The fructose effect on the liver etc, I'd ignore that. It is meaningless in a T1 context.
Dr Bernstein's rules on never eating any fruit except avocado, and never having more than a single tomato in a cup of salad, steering clear of onions, are insanity, in my opinion, for a T1.
What T1s are more concerned with is, not avoiding carbs, but managing the rate at which they are absorbed.
Fruit have simple sugars, so they are rapidly absorbed, and that can show up bad on graphs.
So, we tend to have them as a dessert at the end of a meal, so that the rapid sugar absorption is buffered by the slower carbs, fats and proteins from the earlier courses.
That way, we get, as you say, the vitamin and mineral nutrional value of, lets say, figs, greengages, melon (that can be a tricky one!), all the berries (a whole 400g punnet, not just a few), without the horrors which T2s and Bernstein paints it as.
In a T1 context, it's not at all about avoiding fruit. It's more to do with getting the timing right: that involves the amount of time you pre-bolus, what you're eating it with, and an understanding of the time pattern of the type of insulin you're using.
If you sit down and say, "I'm not eating fruit anymore, cos Bernstein says so", that's just quitting.