Isn't it confusing if there are lots of people with the same name?
同じ名前の人 people with the same name
多い lots of/many
混乱しませんか isn't it confusing?/don't you get confused?
例文 Isn't it confusing if there are lots of streets with the same name?
「同じ名前の道が多いと混乱しませんか?」
参考になれば幸いです。