As always[1], this paper compares MultiPaxos, not Paxos. Paxos is more like the conceptual underpinning to a family of protocols, one leaf of which arguably includes Raft itself. A summary and evolutionary timeline (up to 2018) of the various algorithms in the Paxos lineage is https://vadosware.io/post/paxosmon-gotta-concensus-them-all/

Raft looks good next to MultiPaxos, but MultiPaxos is hardly the state of the art in the mainline Paxos lineage. MultiPaxos was published in 2001, over a decade before Raft. EPaxos is more of a contemporary to Raft, and arguably more in the spirit of Paxos as originally conceived--truly distributed, leaderless consensus.

[1] Practically every paper discussing Raft, including the original Raft paper(s), aliases Paxos to MultiPaxos.