I think we have to take into account how Jesus spoke to people as well. Did he formally write up everything he was going to say on pieces of papyrus or potshards, then proceed to make copies to pass out to everyone? Or did he speak to large crowds of people, which probably consisted of (largely) illiterate individuals? Was the best way to initially reach a population with his message through writing or verbal language?
I’m sure Jesus would have no issue with spreading his message via writing in today’s world, assuming he has access to a computer and the internet. At least, this is in regards to people who have lots of money and can afford such things. Most people don’t like to realize it but there is still a large population in the world who can’t read/write and probably never get a full education. But such populations may also have a strong oral tradition where they usually may not have a strong written tradition. It all depends on the era and culture one is raised in. Jesus was obviously, a great public speaker. I’m sure he probably did write things down, but I’m sure he emphasized the “spoken” over the “written.”