You do realize that they are a business and have to make money, right? They can't keep updating the game for free, especially considering BB isn't as popular as other franchises. It was surprising that they did that for CS2 and that was great, but you can't expect that to be the norm. If you don't like it, you can just not buy Extend but complaining on DL isn't going to change anything.
And I'm pretty sure that arcades have to pay a portion of what they earn from Extend to ArcSys, which is probably why it got patch for free, since they will still be making good money on it.