That’s not being subtle, it’s being lazy.
I beg to differ. The things I’ve noticed are very subtle and not the sort of thing you want to rest a major plot point on. The points are too subtle and too few and most people don’t even notice them. And a lot of people don’t even try once they decide the PT are utter trash. How many OT members have seen the PT none or once and yet have very strong opinions of it? Many have seen it many times and some have even grown up with them and have completely different opinions.
I grew up on prequels and, no, they’re not subtle at all. For example, Anakin is virgin-birth-space-Jesus, but this Jesus also murders kids later so even the least subtle of images is fundamentally broken.