Yes, the 2nd Amendment is still relevant today. However, because of the age of the U.S. Constitution, it seems reasonable to test it from time to time. Consider that since its ratification, the U.S. has expanded by 37 states from the original 13, and the population of the nation has increased by more than 320 million citizens. In particular, the Second Amendment must wade through conscientious waters as the technology of weaponry has advance considerably since the creation of the Second Amendment, moving from muskets to machine guns to drones and nuclear weapons. In all, the Supreme Court has tested the interpretation of the Second Amendment on seven occasions but have ultimated ruled that “The Second Amendment protects an individual right to possess a firearm unconnected with service in the militia”.
You really need to understand the Constitution.
The 2nd Amendment is not a Right, the type of weapon is irrelevant.
The preamble to the 2A just lists the inherent Rights of the citizen, the gist and pupose of the Amendment is
“Shall Not Be Infringed”!
The Constitution limits government powers, empowers the people, and orders government to protect the Rights of the citizens, the population or how many states are in the union doesn’t change that fact.
No testing needs to be done, government accountability, and teaching the facts is all that is necessary.