I was interested to find that my own children’s school has children learning written letters from the beginning, though in the beginning they make them with a “tail” and do not connect them until later. They write with pencils until they get some fluency at writing and then they graduate to large-barrel fountain pens. Once they can write with those, they graduate again to ball points or whatever strikes their fancy.
Eldest had already learned to print before we moved, so he is being gently led from one method to the other at this moment. Youngest will start off with written letters. The letters are slightly different here, as are the numbers. Which is why everybody in Holland squints at my numbers “8” and “9” and “6”.
Writing practice is excellent, cheap exercise in small motor skills. It is also for many children a vital part of learning to read. There is an argument to be made that it is additionally good exercise in learning to think formally and to express your thoughts clearly. It is also not a terrible introduction to the idea that regular practice improves performance, because the results are usually pretty easy to see and come fairly quickly.
It is possible that all these benefits would also accrue to children who were systematically taught to type instead of to write; but my own experience is that this is not what is happening. Handwriting is not being dropped in favor of typing or keyboarding; instead it is just being dropped.
There are and have always been children for whom writing is more difficult to learn, mostly because of small motor skills issues. Sometimes it points to more complicated issues, especially in the early years. For them of course the switch to keyboarding is a great help.