Every time a transaction is made, a copy of it is stored in the blockchain. The blockchain is stored on every single computer that runs a wallet. If transactions take up a lot of space, or if a coin's technology requires a whole lot of transactions, then the blockchain becomes huge.
Blockchains can't be huge if they're to be stored on a mobile phone. So for real-world usability, a bloat-free blockchain is a central concern.
2. Please explain to me what Blockchain bloat is.
My explanation is embedded in your post. Ha ha.
My bad, thanks for explaining it.
Yesterday I said something about Multibit, but nobody of the XC team responded to it I am pretty sure.
Why not make something similar?
Maybe. I don't know. Seems to be less secure. And ugly.
Best to do a light client that'll preserve security, and even run on dumbphones. That, to me, would make a lot more sense.