Deliberate or not, Rosberg confirmed it was at the very least reckless - i.e. he didn't care about the likely consequences.
If someone is capable of doing that, they are capable of other shenanigans, like parking at a street circuit to guarantee pole because for the first time all season you've temporarily scraped ahead of your team-mate.
Oh no no no, gentleman. Sometimes, when you support to much a driver, it can lead to you distorting things. So, let's straight things up, shall we?
It was far from being the first time he was faster than Hamilton and not exactly a scrape ahead either.
Rosberg was staggeringly faster in Bahrain's qualifying where he was 0,3s faster. He was also faster in rainy Q of Melbourne and China. In the former, he didn't get an extra lap and in the latter he spun in last sector after being faster than Lewis pole time untill second intermediate.
Nobody has the power to read minds, so discussing if he did on purpose is absolutely pointless, in my view. Fans of Hamilton will usually say things like "oh, it was so blatant" while fans of rival drivers will usually say "Oh, Nico wouldn't do that". It's just bias view against bias view.
The point I focus is the one I can discuss. If Rosberg did it on purpose or not, it was pointless, the thing is he didn't/doesn't need to. He's usually faster than Lewis. He already was pole in Monaco last year and then further showed that by being faster than Lewis in both Q3 attempts in Montreal(Lewis' track).
Rosberg claimed pole again, in Monaco, for no other reason than being the fastest on track, it's as simple as that. Hamilton went crying to the press_even claiming to be 2 tenths down, when in fact his first sector, of the second attempt, was a tenth slower than Rosberg's pole time_ to make it as an excuse.
Rosberg has been humiliating the guy recently(2 pole laptimes in Suzuka, 3 in COTA) and Lewis was lucky yesterday cause Nico was coming for a 1.09.8 on his first attempt until the mistake in the last corner(Lewis's 2nd intermediate was 53.65 and Nico's 53.38). So, I understand the bitterness of your post, but you gotta deal with it.
At least Lewis is gonna take the champion's trophy, in the end.