Yes. The article is about how a particular open source Matrix server implementation isn't suitable for millions of simultaneous users, and you should pay for th

Yes. The article is about how a particular open source Matrix server implementation isn't suitable for millions of simultaneous users, and you should pay for the non-open-source version. But if you are merely handling tens of thousands of users, no problem. And if you have the budget to handle millions of users, maybe you have the budget to pay development as well as operations staff?