Basically, yes. The community still exists, but it's been a long time since they used the Roman rite, as the clergy who knew it eventually died off without teaching others. They use the Syriac rite now for the most part, but some Latin practices can be seen now and then during certain festivals and, I'm sure, in the homes.
I don't know the story with this particular church. The story says it was "rediscovered", but if there's a community there, I suppose it was never lost. Probably the author is trying to emphasise that these communities are now getting the attention and care they should've had all along or something like that.