Fear of Silverlight?

Since the announcement of Microsoft Silverlight I continue to read posts of flashers (being subscribed to mxna feed) attacking silverlight in various manner.. (here some links to these posts)
I must admit I don’t know silverlight at all. I just watched some online demos and downloaded some examples.
For what I’ve seen I don’t like it too (but just for personal feeling), but I also have to consider it’s the first (and beta) version….
Otherwise I think the vector rendering engine is more powerful than the flash one.

But why people fear of it? Does it because it’s a Microsoft stuff? Or just because it’s a possible Flash competitor?
Usually when someone attacks something, this means that you fear or it. But I don’t agree, I hope MS will continue the development of silverlight because competition can only be a benefit in a global market.
Don’t you agree with this?