Also, IMO the Crisis of Modernism in the Church began with Galileo.
All the errors since flow from that.
Well that's a fine ivory tower academic discussion, as well as a fine "opinion" to have. But opinions are like _____. Everyone has one, and they stink.
But in the practical, if you refused to attend Mass at *any* Catholic parish in 1950 and missed a Sunday Mass because of your belief in some kind of "crisis" you would be in mortal sin and in danger of hell fire.
So you can call it a precursor to the crisis, a brewing problem, or a general arc of decline (Bishop Williamson drew this on his whiteboard many times) but it's still completely different from the Crisis in the Church (note the capital letters) which BEGAN with Vatican II and necessitated every Catholic to stay aloof from what the world knows as "The Catholic Church" lest they lose their Faith and be contaminated by Modernism. The Crisis in the Church (proper name) necessitated the Traditional movement, which began right after Vatican II and the promulgation of the Novus Ordo Mass.
In other words, if a "crisis" doesn't necessitate aloofness, it isn't much of a true crisis. But anyone who stayed away from the "official" Catholic Church before 1965 was merely a schismatic and an apostate, if not a heretic.P.S.
Since time machines are metaphysically impossible for creatures to have, the talk about being in 1950 is a bit superfluous.
HOWEVER, if you right here today, current year, reject any dogmas (Immaculate Conception? Assumption?), papal bulls, legitimate Councils (Vatican I?), canonizations, popes, etc. which happened before 1960 then you are also a schismatic. Long story short, the Church was functional until then, and you have to submit to any legitimate authority of the Church.