They're out for money, so I'm not surprised. And I wouldn't be surprised if part of the reason they're going to Alf is so that they can keep copyright on the character.
Revivals tend not to bother me so much. They aren't the worst things in the world and it won't kill you whether or not they make it, whether or not they do well. Don't like them? Just don't watch them. If people like the revivals, that's their opinion, not yours. You do not need to agree with them.
Plus revivals are an opportunity for the younger generation to be introduced to a franchise. For instance, look at Michael Bay's Transformers movie. Yes I'm aware that there are Transformers fans who hate how he portrayed the robots. But nonetheless, his movies still introduced a new generation of people, who may have never seen Transformers before, to the franchise. And because of Bay's Transformers, this new generation, now interested in Transformers, can look into the franchise and see the different Transformers stuff that came into existence over the decades they've been around.
True that there are other ways for a franchise to be introduced without a reboot. But my point is reboots are still one way to introduce a new generation to an older product.
Also a reboot could actually be really good, but it only scores bad due to fanboys hating on it simply for being a reboot. A reboot should be judged by its own merits, not compared to the original stuff. When judging it, don't think about how it was in an older incarnation; only think about what the reboot provided and judge from there.
I'm not saying reboots are automatically good. I'm just saying that they can be well made, but people would still hate it only because it's a reboot, not because of anything the movie did wrong itself.