I don't know
@blackbart.
If there was some reason(s) for all the Rams' OL injuries, that would suggest something changed since last year. The coaches, training staff, medical team, practice and playing surfaces all seem to be the same.
As far as history under McVay, the success of the Rams is directly-tied to health and continuity on the O-Line.
In 2017 and 2018, the Rams were 1st or 2nd the NFL in scoring. In those two seasons, not a single OL-starter missed a single game due to injury. In 2019, the Rams had injuries on the O-Line. They finished 9-7 and missed the playoffs. They had good OL health in 2020, made the playoffs and won a playoff-game in Seattle. Last year, the Rams had very good OL-health.
Not saying that it's only bad fortune and luck; and I agree the Rams should consider and look into possibilities. However, until I read something that makes sense, I am leaning towards misfortune.