Noone says that one can't share the thoughts about X here. Therefor that forum here does exist. However, it did happen already more than once that rumors turned out to be totally odd, and caused rather headace and sadness to both, X fans and the X members themselves... I just think of the time when I came into X - that was, when many people who wanted to say something about Yoshiki, claimed that he is an arrogant, despotic asshole to the members of X. So for what is THAT good for? This opinion still exists unter some J Rock fans and that's something that makes me really sad about it. Since they don't try to see the truth behind it and simply believe what xyz-j-rock-fan says.
Aside from that it so easily happens that things that were mentioned in the medias and the internet become exaggerated. Which make fans either too enthusiastic about something that was never said that way, OR they worry about something that's not a bit true (shall i say that there are some people believing that Yoshiki is close to death currently? C'mon!)
And now about a concert in London... Naturally, one can talk about that that it would be cool, if it happens, but I'm waiting for those who do think then that is announced officially and in the end, the concert won't happen... then everyone who believed in this is totally dissappointed. And even worse if X themselves would have trouble to explain that then... (tho, naturally that case now is an exaggerated one 
)
Well, seen from that point of view, I completely agree with you, as well. Specially on the last part: would X have the nerve to deny the existance of a concert in London after months of speculation and fans going hyper? ,etc.
However, concering the posting of one's oppinions (eg. Yoshiki is arrogant or not), well, everyone is entitled to think of things in their own way. Personally, even if I thought person A, B or C was arrogant or stupid, I would never post it online for the world to see, I'd rather keep it to myself (moreover when I possibly wouldn't even know such a person in real life). However, not all of us are like that and some people are keen on spamming their controversial oppinions everywhere. There's nothing we can do about it, though. Speaking your mind is a basic human right and we can't go against freedom of expression. If we believe it or not (and the same applies to the Yoshiki-is-so-totally-dead--ish rumours), it's up to each one us, to our sense of reality and to our conception of what we should believe or not.
And I think this resumes the point: people must be free to speculate (aside of totally stupid and offensive speculation) as they wish. We're not exactly gullible children, we must develop the ability to choose the information we should point as either totally
absurd or possibly true. However, just like you said (and quite wisely), let's not get too happy before the truth is out or the whole thing might end up as a total delusion. And I hope it's not, of course.
