That would be most people in the world. A lot of people want to think they're themselves but aren't.It's still in your post for all eternity and for everyone to see. They just got lucky they didn't say it was them, or I somehow missed it. People who can't be themselves are no good, or up to no good.
Here's the problem. People can try to be honest but people can assume they they are fake. How can you possibly tell for sure?
The only time I'm going to get concerend about lies is when someone admits they prefer lies. Which is extreamly dangerous. Not just for me, but whoever might make such a claim. I'd be more concerned about "them" in such a situation. If it ever gets to this point though then there's been a back and forth of thoughts and opinions already.
Those people "Typing like dis 2 u" could be bots, or they could be trying to find out about you. People use phones a lot. So they type like dis 2 u. I prefer PC. Makes it easier to type proper words and hold conversations better. This is also why I prefer discord instead of telegram.
It's quite possible phones limit communication more due to smaller screen and such. That alone will make it harder for people to keep up with more detailed communication.