If it is pointless, the amendment should be formally removed (voted, ratified), not breached, otherwise any existing law and right can be breached with the excuse "this is completely pointless today".
That is essentially impossible with the high constitutional requirements for amendments and the current extent of polarisation and constitutional hardball. Even for things which are almost objectively broken: the electoral college, for example, has never worked in the way the Founders anticipated and no-one would dream of writing a similar system into a constitution today. So talk of amendments is pretty fantastical, regardless of the merits of the second amendment.