Just look at BrookeAB recent tweets, they are the type of non-normal/stalkers who are getting police reports put on them. Maya + a lot of other girl streamers have stalkers just like that. Very sad stuff. SweetAnita stalkers are also crazy.
Most big streamers won't attend public events like TwitchCon because of this and why they try to keep their dating/off stream friends and personal life off stream as much as they can. Obvious stuff will leak/get out like the Maya with her bf at Coachella video. Pretty much every girl streamer has an off stream bf, it's very normal and why they don't announce it unless they feel safe to.
As you also said, jerking off to content creators/actresses/models etc is normal/fine, going the next step of tributes and sending them to the creators is very not normal.