Why do people whine about having no fixes right away, though?
It's gonna be a gradual process. They literally haven't implemented any fixes yet, but they've postponed an entire operation just to dedicate themselves exclusively to fix the game. They have three months to do it; if things don't get better by then, then you can whine.
Sure, they didn't fix anything in the last patch, but they didn't mean to, either. Just because Operation Health started it doesn't mean everything will get fixed right away. They're testing stuff, they're overhauling entire systems, they're gonna improve the servers and tweak the netcode; they're fixing hitboxes, rewriting X-Kairos' entire code from scratch, making pretty much everything server-side, etc..
They might be part of Ubisoft, but I really doubt they have such a huge group of developers as everyone believes. Publishers as big as Ubi have different teams working under their name for different projects. We have R6:Siege, For Honor, Watchdogs 2 and the new Ghost Recon. They're all rather recent games, and not everyone is working on all those games. The Rainbow Six team cares deeply about the game and its future, which I think is why they're taking an entire season to improve the game's systems and solidify its structure to make it stand its own ground as a good, profitable and competitive game.
I don't really care about them cutting one (free) map and delaying the release of two new operators. I'd rather have them fix the big and little things that affect the game's health so the developers can make a living out of it and provide a good alternative to Counter Strike (which I kinda don't like because of its simplicity). Now, if they don't manage to fix the issues, I'd still probably play the shit out of the game, as I've never been really picky when it comes to bugs and glitches. I don't care about playing ranked; I don't care about win rate, KDA or whatever. It's a good game that's only affected by some bugs that some people like to blow out of proportion. At least they're actively communicating with the community (or reddit, at least) and they're delivering. If people don't like the way they're doing it despite having been asking for fixes for months, well, too bad. At least they're trying, and not leaving the game to die.
I don't know whether TRS were involved in the development and post release maintenance of Left 4 dead 2, but that game truly had some game breaking glitches, such as entire rounds ending prematurely, tanks getting stuck or dying instantly, and things that the community demanded to get fixed because, honestly, it was common sense, and the right thing to do, but Valve did nothing to address those issues and now, 8 years after release, Smokers still can't grab people on the rooftops of No Mercy. Plus, Valve weren't really talkative back then (or even now), which added insult to injury.
I don't know... I think it's the right thing to do. People are never satisfied.