There are different case scenarios.
1) Let us say, my DNA is in Gedmatch, and I have a tree. Now, Gedmatch has the options to opt-in or out of one’s DNA being compared in police investigations.
If, say, in a discussion whether to opt-in or out, in a genealogy community, I say, I am against it because of this and this, it should not be viewed as suspicious. People have opinions.
2) I say nothing in such a discussion. But instead, I suddenly call my relative who lives nearby, is deeply into genealogy and has a tree. And ask her specifically not to check opt-in for her own DNA in Gedmatch.
This could look suspicious to her.
The same with Indiana - if someone living in/around Delphi area starts asking relatives to opt-out of Gedmatch, it would be unusual. If they opt-out for own DNA, it should be OK. MOO.