First off, Az owns this chapter. Being chill and friendly is a great way to be, honestly. Putting it as only attracting creeps is dehumanising people and treating extroverts as creeps. They're like, "Oh, no, she dared to talk to someone! What would they think?" It's people who act like that who feed into that creep mentality, on both sides.
It also goes against the earlier message of the manga, that it's not so important to think about what others think, and what's more important is what you think.
If you're always worrying about making the wrong impressions, you're not going to make the right impressions.
And being able to banter with random people is an awesome social skill to have at many jobs, where you're forced to work and interact with people you might not otherwise choose to. That's especially true in Japan with their after work meets, often with bosses.
If anything, the problem Az has is figuring out what she really wants, rather than just going with the flow. While, as I mentioned, it's perfectly fine to have those loose interactions with people, it's also important to treat them as such, at least until the point where you think there's some genuine value there.
So the solution isn't to stop doing it; it's to learn about her own needs and wants.
Second, that gear analogy makes perfect sense. It's not even a stretch.