Undoubtedly. But my guess is that the threshold for blacklisting stale addresses would be noticeably lower than the threshold for any blacklisting based on, well, "governance".

You could even conjure up an argument based on block chain "balance of hashrate" security, which I presume is the best type of argument with that audience: "what if, after mining rewards have run out, everybody is just doing value store? No transaction fees for those selfless miners! (will they still be called miners?) One by one they will close their datacenters, difficulty goes down and suddenly the gates are wide open for 51%. Quick! Introduce mandatory keepalive ping transactions or we are doomed!"

Not that I expect this to happen, but I find these musings far more entertaining than the ups and downs of the market.