By name and patronymic is from ancient times, is it necessary to address them in this way now?

In modern times, addressing someone by their name and patronymic is generally not necessary. This is because most people in the modern world use surnames, rather than patronymics, as their primary form of identification. In some cultures, such as Russia and some other Slavic countries, patronymics are still used as part of formal address, but in most other places, they are not.

It is important to note, however, that there are certain contexts in which using a person's name and patronymic is still appropriate. For example, in many cultures, it is customary to use someone's full name and patronymic when introducing them or when addressing them in a formal setting. Additionally, in some countries, such as Russia, it is still expected to use a person's name and patronymic when speaking to them in a formal or professional setting.

Overall, while it is not necessary to address someone by their name and patronymic in modern times, it is still an appropriate form of address in some contexts.