Yes, that is true.
But negativity is about as frowned upon as toxicity.
Because not everyone wants to give up just because one player is having a bad experience. Which can lead to griefing, then that leads to toxicity due to the negative influence. Someone suggesting on FF'n isn't toxic. Everyone does it. But you have to work together when it comes down to the choice if the team wants to give up. If they do not, then don't try to ruin their experience if people want to continue to play by not playing.
Also realize, just because you don't see a toxic player punished doesn't mean they weren't.
Each report counts as they will count as a flag. As these flags stack up, they then lead to a penalty. Every toxic player eventually gets penalized. But the IFS detects two categories; Severity and Consistency. Players do have bad days and lashes out. Doesn't mean you shouldn't report them, because you definitely should. But don't expect a penalty right away. Because the consistency will play its part and give them a penalty from the number of flags.
It's a team game and you have to work with the team. For better or worst.