@jz if the profile is blank, it could mean a couple of things. My instance may not have pulled in any data, or their instance may not allow general follows, who knows.
I’ll look at their public page on their own instance first, so I can get a historical representation of who they are.
If I like what they post, or find their content thoughtful or fun, then I’ll likely follow them back.
On the other hand, if they have no historical data available or made public, I’ll likely do nothing, and maybe check back in a few days.
I have no qualms about people following me, if they want to. I don’t post anything inflammatory or argumentative, and try to stay wholesome and helpful as much as possible.