If he's not even willing to be fun on that first point of contact, he's probably not going to be much fun on a date.
Then, you reach the point of serious contact, when you message one another to try and decide if he's someone who's actually worth leaving the house for.
And so you type, "Hey [Insert name of hopefully non-psycho guy here]." Right then and there, you've potentially failed your first dating app test.
Save filler conversation like that for the 300 creeps you're probably never going to meet in real life.
For the guy you are actually maybe interested in, stick with full (-ish) sentences. After all, romance has a better chance of happening when you're both actually looking forward to meeting each other.
I was more impressed that something in the cards showed a lack of potential suitors to replace him.