Why is “nursing care” not included in Specified Skilled Worker No. 2?

Kanagawa Shimbun (2025/01/06) states the period of stay for specified skilled worker “nursing” is five years. To be precise, the total period of stay for the residence status “Specified Skilled Worker No. 1” is set at 5 years, and in order to stay beyond this period, it is necessary to obtain the residence status of …