Ok, good to hear.
If I understand this ping mechanism correctly it would mean that if noone is interested in the current end result of particular token inflation, then witnesses would ignore it and the blockchain would not contain any related transactions either. Something similar to post/curator reward claiming.
Interesting concept, however it still seems too easy to revive dead SMTs, f.e. a site that tracks market cap of various coins could just iterate over all available SMTs and ask for current supply. If the similarity with reward claims goes further it would mean the one asking would expect witness to give him proper answer "as of now" rather than "it was X last time I checked which was two months ago". That would mean that while blockchain might not contain constant inflation related transactions, the witnesses still need to keep permanent off-chain record on all SMTs just to satisfy the above mentioned question.