"has navigation that takes you to open source stuff" is not "claims it's open source". The title is just wrong and they have clearly fixed the thing people were complaining about last time. It's not reading between the lines, it's simply misreading.
In my opinion they intentionally keep it misleading. And fact that every once in a while someone posts about their project with "open source" in title is good proof that it does confuse a lot of people.