Look at it this way. If hypothetically you meet someone new. And hypothetically they become important enough in your life that instant text communication becomes "mandatory", then the 2 of you will end up finding a means of mutual contact methods without much effort or thought.
For example, I always only used text. But I had a Facebook account that I hadn't used in years. I met a woman who used Facebook Messenger, as her primary communication method. I noticed it when we were hanging out. So as she became more important in my life, I one day reopened my Facebook account and installed Facebook messenger on my phone. I then just sent a random "hello thinking of you" type of message to her and she responded. Simple. No big struggle. Just made contact.
If it's important to the people, one or the other will observe what the other person is using, and make contact through the means that they see the other person has.
The reality is that if a new acquaintance doesn't meet the level of importance to cause the above to happen automatically, then that person and yourself have not yet reached a point where texting or messaging is of any necessity or importance.
There are numerous messaging options. If two people are drawn to each other, then they will automatically find a common ground.
If you are worried about whether what you are using might affect your ability to build relationships, then you are jumping way ahead of things. Approaching it backwards.
Also, consider that face to face needs to happen first. You need to meet them first before you're thinking about how to message them.
Of course, I'm assuming you're not looking to try to meet people and build online relationships with the hopes of online meetings becoming your social life, or building your sex life from Craigslist. But, if that is what you're doing, I hear the sex-crazed use some messaging app call KIK. I think. Not bothering to verify that myself. Either way, they have apps for that.
The green bubbles ARE annoying in appearance because the white text doesn't contrast very pleasantly with the bright green background but jeez, some of those tweets were more annoying than any green bubbles I've ever seen.