Esteban Ocon used his post-race media sessions in Montreal to accuse his Alpine team of "not doing their job".
The Frenchman was incensed by a late order over the radio to let team-mate Pierre Gasly move through. As a result, Ocon finished 10th behind his compatriot who had failed to catch up to Daniel Ricciardo ahead.
That was the reason given for the request for Ocon to let his team-mate through. Afterwards, across several interviews, the 27-year-old whose impending Alpine departure was announced this week declared himself "too nice" as he ripped into his employer.
Speaking to F1 TV, he said: "I'm not the happiest, to be honest. We started last and got into the points with both cars which is amazing for the team. But I did my part of the job, being a team player, being the nice guy. But I'm too nice.
"We had to let Pierre go at the end, which I did - I've always followed the instructions that I've been given. But for no reason, really, because we were not going to catch Daniel - that was the reason for the call - so I'm losing a point there.
"Being too nice is not the right attitude to have in Formula 1, but I showed that I'm a team player and that's what matters. We'll discuss it with the team. Today, I'm not the happiest with how things ended." And he made many of the same points again as he spoke to the written media shortly after.
Ocon said: "I did my part of the job, but I don't think the team did their part of the job. It is bothering me a lot. We did a mega race from last to be inside the points. To P9, really. Today I did my part of the job and the team didn't. I'm not happy about it because I did a better race and I should be in front. I showed once again that I do what's best for the team."
Catch all the action from Formula One on Sky Sports and get exclusive access to races, qualifying and much more for every Grand Prix. From Max Verstappen to Lewis Hamilton, you won't miss a lap on Sky Sports.
Ocon had started 18th on the grid, his position made worse by a five-place penalty which carried over from the previous race in Monaco. That was given to him for causing a collision with Gasly on the first lap of that race which infuriated team principal Bruno Famin.
The driver insisted ahead of the Montreal race that the timing of the announcement that he will leave Alpine at the end of the year had nothing to do with that incident. But there is clearly some bad blood between Ocon and his team.
Meanwhile, Gasly said he was "very happy" with his result after losing several places at the start. Regarding the team order for Ocon to let him pass, he insisted it was "no big deal" and wanted to focus instead on "a good day" for Alpine, who scored three points and moved up to eighth in the constructors' championship.