As if they were afraid of talking.
Most of them only want dinner and taxi for free and have three pics for insta: one of the dinner, one of the dessert and one of the fool paying.
I met my girlfriend at a metro station just like that, unprepared, both with empty smartphones, we exchanged the numbers oldschool, on napkins.
Just avoid any situation that looks like "dating" - too many rules, expectations and pretexts. Too much lying and deceptions.