There definitely are good reasons why Ethernet won out over token ring, but there are scenarios where token ring was better. Before modern bridges, Ethernet could struggle with collisions if a network were too highly utilized - especially if nodes were physically spread out.

As for the diagrams, it can sometimes be confusing when it’s not made clear what is being represented. Physical and logical topologies can be mixed star and bus and matched in different ways, and diagrams don’t always make clear to which they refer.