that is indeed still the case, the comment is just false. comma just released support for ford cars aswel. and open pilot got rated the best self driving tool above Tesla by consumer reports
1. They are living in a sf USA big city centric bubble.
2. They are very easily influenced by marketing.
3. They are just trolling.
Comma is a product you can buy all code is opensource. All others is just a service, where people could theoretically just be diving remote and they sell it as self driving.