As I see it, the TSH level needs to be whatever it needs to be when you are doing well.
If the combination of your hypothalamus, your pituitary and the response of your thyroid happen to end up with TSH at 2.0 rather than 1.0, then so be it. There are many factors which can affect exactly where your personal TSH will end up. Further, as is often pointed out, TSH varies significantly by time of day - someone tested first thing in the morning is more likely to be diagnosed than that same person tested in the afternoon.
When people write about TSH being below 1.0, I usually read it as if they are actually trying to say that:
People on medication might need their TSH to be not only well below the top of the reference range, but towards the lower end of the range. Some, possibly many, find they need their TSH to be 1.0 or below, even below range, to feel good.
My own TSH has never been below 1.0 when tested.
Having said that, my own first TSH test, which in the fullness of time did seem to be when my thyroid hormone levels were starting to drop, was only somewhere around 2, certainly lower than 2.75. So I would certainly be keeping a weather eye open on the thyroid front.