It is not the staking that leaves a lot of the dust. The wallets that are staking are being attacked with dust transactions.
The Blackcoin network is being attacked with spam/dust
check out this post
https://blackcoin.nl/a-dust-attack-affected-legacy-blackcoin-clients-in-late-sept-2020/
thanks
It is important that people upgrade/migrate to Blackcoin More v2.13.2.6 and (optionally) raise the fees to avoid relaying these transactions. We will have to raise the fees in the next version to mitigate these attacks
Next More version will be v2.17.0 and is based on BTC Core code 0.17.
More can be downloaded from https://blackcoinmore.org
Thanks