No it's not. We can safely increase the limit to at least 4MB right now, and there won't be a problem.
Yes it is and no we can not.
It has been tested on testnet already. Stop spreading misinformation. There's nothing dangerous about bigger blocks.
The BU testing methodology is garbage and should not be used as 'evidence' for anything.
The reason of the blocksize limit was not decentralization, not safety, but anti-spam.
Both safety and anti-spam.
The blocks aren't full of spam
You can't prove this and you know it.
Also it's ridiculous to say 2MB blocksize is dangerous while saying we should get 2MB later. f it's not dangerous later it's not dangerous now either.
No, it is not. You clearly have no idea what you're talking about. Quadratic validation time without Segwit. I highly doubt you even understand the big O notation.