Kinda depends on their gender, in my experience. Guys without a profile and pics of just themselves not really doing much are usually just looking for a hookup. The girls without a profile are usually what is generally accepted as highly attractive and probably don’t even care because everyone will like them.

I have yet to actually have someone talk to me on any of these apps beyond saying hello or asking how my day is. I had better luck actually finding people to talk to, get to know, then set up a date through Craigslist back when it had a personals section.