Me too don't worry.
Though my reasons is a bit different; not only afraid of them being disappointed in me, but I'm also afraid I will be disappointed in them.
That is why I never idolize or getting too close to a person, my admiration and love can flip to utter hatred just because the smallest things. I'm afraid to get hurt by them, to be ignored by them; when you're attached or admire a person, it will become a paranoia that they will leave you and betray you. That's just my personal issue though
I also agree with @Hexigate 's sentiment (I can't quote you because I'm on mobile), that's why I prefer to support smaller creators because they need it more than larger creators who already have gazillion of support. Same with why I prefer buying local products than something branded from a big business chain. Why make rich people richer, when you can help the poor and average?
While partly stems from my inferiority complex and solidarity as a person who have never make it, it's also comes from my bad experiences.
Most often, when people goes big their true colors start to show and it revealed that they're actually not a good person you believed to be. They will also be busy thus have no time for you, though it is understandable it can be hard to swallow. Worst is, when they leave you because you aren't cool as them anymore, although you're the one who helped them in the lowest from rag to riches (and stupidly you still help them even when they have abandoned you).
It comes back to my issue number one about disappointment and abandonment