I sympathize with any trying to sing our national anthem. It is very hard without cracking your voice.
“The repeated first melodic idea basically uses the lower vocal register, the third phrase forces the singer to use the higher register and the final phrase requires both registers, the opportunity to explore both the light and heavy vocal registers as well as to work on blending the two is a bonus.”
I don’t think it’s hard.
I can understand concern about the high note, but overall it’s fine. Covers more than Ode to Joy.
Whitney Houston absolutely nailed it in her 1991 rendition at the Super Bowl. It’s my all-time favorite version.