I think there is misunderstanding here, AFAIK there was no swap but airdrop for Zeitcoin users which already ended.
Zeitcoin is still running without issues.
I think zeitcoin needs to create a fork with new blockchain with excluded addresses that weren't participating in any transaction for a year or longer, but other addresses that moved within a year would be accessible on a new chain. That is only an idea for now.
What about the holders of Zeitcoin who was not staking for the last year? I have been a holder since the start of this project but stopped staking in 2019, but have never dumped a single Zeitcoin.