To be fair, Lamar historically has been a much different player in the postseason. 1-3 record with the one win he got coming on the back of a pretty meh performance.
I would argue this game against Houston is the most important one he's ever started. If he plays well, a lot of that downplaying disappears. If he doesn't, it's just going to get louder and he runs the risk of being compared to trash like Dak Prescott.
he threw for over 360 yds and rushed for over 140 in the 2019 divisional loss to TN. one of his picks was a perfectly thrown pass that went right off andrews's hands into the titans defender's. the ravens lost that game because their run defense was atrocious and because the titans made some key stops on 4th down, combined with roman quickly abandoning the run once the ravens went down. not because of lamar
and in his win against the titans the next year, he still rushed for 136 yds and a TD despite not throwing a TD
but yes, i do agree that this is (so far) the most important playoff game he's played. if the ravens lose this game and lamar plays poorly, then all the criticism will absolutely be warranted. i have a lot more faith in him going into this postseason than in the past, mainly because of the way monken has brought out his true potential as a passer