It has been commonplace for at least a couple of centuries in The West for people to reject Christianity (supposedly) on the basis of abuses by and in one or all the Christian churches.
This stands in contrast to the way people behave in politics; where a convinced socialist (for example) has no problem in remaining an ideal socialist despite the gross failures and corruption of actual socialist governments in Russia, China, Cambodia or wherever.
People will put great intellectual effort into distinguishing the 'real' ideology from the institution...
But when it comes the the ultimate religious questions, Christianity is abandoned and rejected quickly, wholly and vehemently; and this is justified on the basis of much less gross failure and corruption than those of actually-existing communism.
This Christian apostasy in The West has been such an extreme phenomenon as to indicate a covert desire to abandon Christianity on any excuse.
At the same time, apostate Christians - i.e. those who were in the process of rejecting Christianity - have often pretended (to themselves and others) that they were 'rejecting the church/es in order to be better Christians'.
Yet in retrospect it is obvious that challenging, subverting, 'reforming' the Christian churches was, in practice, nearly-always just a transitional phase on the way out of Christianity altogether.
It turns-out that the frequent claim of leaving church 'to become a more serious Christian' - almost always - was disguising the fact of leaving the churches in order not to be a Christian at all.
...Or maybe to become the kind of pseudo-Christian who simply follows the lead of the evolving Left agenda while giving it a pseudo-Christian rationale (like the modern leadership of all major 'Christian' denominations).
I regard this as (by accident or design) a false trail - a misleading association - laid by the powers of evil to discredit in advance what has now become the only way to remain a real Christian: I mean that now all real Christians needs to become spiritually independent of all churches.
This does Not means that all Christians need to leave all churches - individual Christians may/will continue to find specific churches to be helpful - but it does mean that all Christians need to regard all churches as (more or less helpful) means to the end of salvation.
Even those Christians who regard their specific church as necessary to salvation, now need to regard that church as a means not an end. They need to look upon their own church with a discerning eye, and discriminate decisively within that denomination - to see in what ways denomination churches, or priests and leaders, enable or assist salvation; and distinguish these institutions and individuals clearly from the many/most ways in which that church-as-a-whole is leading its members away from salvation.
The situation here-and-now is a choice simple and stark: Christianity or spiritual death.
And indeed, without real Christianity as a basis - even ordinary, everyday, commonsense living has become impossible - has turned against itself. We live in an unprecedented world of officially-imposed, mass-accepted, value-inversion.
To be normal, mainstream, agnostic is thus to make the choice of damnation and death.
(It was not always so - but it is Now.)
This means that each and every person must now find a way to become and remain a real Christian.
Find a way. There is no signposted path anymore.
Christianity is primarily about ends, not means; because the means derive-from the end.
The end is simple: to follow Jesus Christ to eternal resurrected life in Heaven.
That is easy to understand. The tough thing is doing it; but people do tough things all the time when they want them - they travel long distances to meet family or lovers - or even 'just' for holidays, train - hours a day - for sports; they pursue education and careers over decades...
If someone truly regards eternal life as important; then he will not shirk from work, from searching and suffering, in order to get it.