It still sounds like this is something that happens regularly; we don't know why it happens; it's possible that the company is negligent or worse; but we just assume it's user error and we're ok with that.
That's because in 99.9% of the cases, it is. If we were talking about the electrum wallet, would someone think about going after the developers for losing the coins? I don't think so. Blockchain.info/com has its problems, but that does not mean they are responsible for their users' actions. If there was enough evidence that they were doing something malicious, then I'm pretty sure we'd all go against them.
However, most claims one sees around are
the same than for desktop/phone wallets, so it's in most cases a new crypto user that thinks that because there's a website offering a service, the website is reponsible for security.
PS: why do you write all your posts in italics?