Calligraphy is still a work of art, and many people collect calligraphy to add value, just like buying a house.
If you have a collection attitude, I can tell you clearly: work hard and study carefully before deciding whether to start. Any calligrapher's work is an expired calendar to the public-waste paper, which is rare.
I've never heard of Shiraki. A master of calligraphy is a courtesy title, and it is a courtesy title of others. I didn't seal it myself, and I didn't take the exam. You can buy certificates, but not respect. In fact, calligraphers are flying all over the sky at present, and the full name of China Calligraphy Association should be China Calligraphers Association. You can know the number of members through Baidu. In this sense, Bai Mu should also be regarded as a master of calligraphy.