This is my first question ever asked on SE and I'm excited to be a part of this community!
Welcome! From your bio, it looks like you've done a good amount of cycling, and almost certainly would have something to contribute. I'd suggest that, rather than complaining about our logo (which the community has discussed already), you might contribute by asking and answering questions.
How do other people feel about this icon? I think it should be more bicycle-related.
Personally, I think that using a headbadge to represent a bicycle site is a good move. It's related to bicycles, but simple. Logos have to be simple or they look bad.
Can we have it changed?
That said, if you have a better idea for a logo, please propose it! It'd have to go through the Stack Exchange designers, though. And they won't make a change just for change's sake, it'd have to be a significant improvement to warrant changing the logo across the entire network. Tee-shirts and other merch would also need to be redesigned.