The "dividing account abuse" explanation has never really made much sense to me. A large stakeholder who is willing to go to such lengths to obtain something close to 100% of upvote will most likely just find another avenue if that particular one closes. Circular voting or vote selling (off-chain if necessary) will still be possible.

However the impact on real small accounts, new accounts, and engagement through comments will be substantial. I would argue that the pros of the CLRC change do not match up to the cons and it is a part of the EIP that could be dropped, without dramatically altering the main pillars of the proposed change.