then ssb is a blockchain as well, even more so than dat. i understand that one can define it like that, but imho if there is no token/cryptocurrency involved i would not call it a blockchain. usually ppl hearing blockchain think of cryptocurrency.
if you'd call dat blockchain, one should be aware it means every peer usually creates loads of them and only they can write to it and also subscribes to loads of them only writable by others. consensus then means it was signed by owner๐คทโโ๏ธ