I’m sympathetic to OPs concerns. But I have a fix. First, the issue: My first few nights in the GFC sucked; I barely slept because those loose tent flap bottoms make the whole side flap against the inside layer of the tent, rattling the buckles and creating lots of noise (50+ dbs as I measured in fairly low 20-30mph winds). Worse than any ground tent I’ve ever used, for two reasons. First, the wind is usually stronger off the ground, second, a ground tent rain fly tensions to the stakes and poles, preventing it from whacking the tent body.
[The fix:] buy some tarp clips and use them to tension the sides of the tent down to the tent rails. (How does your tent perform in the wind? - #21 by KOM-Chaser)
This mostly solved it for me. That, and making sure the zippers of the doors were all the way up.
Good luck, don’t give up up because of this.
That said, I’m also in the “GFC aint worth it” club. Would rather just use a ground tent and snugtop. Use the savings to triple lever QQQ or something dumb like that 