Why are you picking that time frame?
Kyle has been our coach for 6 seasons not three.
And how the hell is McVay less succesful? He's had 2 Superbowl appearences with 1 ring in the past 4 seasons
Of all the coaches you listed, only Reicht and Taylor have losing seasons like Kyle has with us. In fact, Taylor is basically in the same spot Kyle was after year three: two bad seasons to stack the roster with talent and take them to the SB in year three. Of course nobody will question his post, no one was questioning Kyle's after 2019 either.
And while I agree Kyle won't be in the hot seat anytime soon, there's certainly a case for Kyle being in it. His teams lose way too much (when we don't make the playoffs, we fukking suck, there's no in between) and all of our problems are mainly his doing: QB situation, OLine situation, RB situation, injuries (like other have said, there has to be a something going on with the way we prepare and train to explain 6 straight fukking years of big injuries). I wouldn't be shocked if eventually he gets over the hump like Andy Reid did, but I no longer think he's gonna do it with the Niners.