One thing that has changed a lot since the last major Western Christian revival (i.e. that of the 1939-45 World War); which is that a modern Christian must be far more personally motivated - and, where that necessary motivation is to be 'found' is not susceptible of a single, general, socially-applicable answer.
Seventy years ago CS Lewis was able to write about Christianity in a way that pretty much rejected mysticism and personal spirituality; because the Western churches were still sufficiently strong that a Christian could focus mainly on obedience to church rules and teachings. It was, in other words, still possible to be a (mostly) passive Christian.
This was never a very good kind of Christian to be - it is, indeed, pretty strongly against the basic nature of the faith; and if a religion based upon obedience is what is wanted, then other religions do this much better than Christianity ever could. Christianity's most formidable rival is very clear about what is required of its adherents, and although difficult, this is finite and do-able - but those Christians who see their faith in such terms are flying in the face of its nature, and swimming against the current.
Anyway, nowadays the passive Christians have mostly ceased to be Christians; and the traditionalists who yearn for a return to obedience-based faith sound less convincing with every year; and soon will become unable to convince even themselves.
This is because we cannot be motivated to obedience when the church has become (substantially) just another branch of the global careerist political bureaucracy.
Labile dishonest bureaucracy may be a sufficient motivator when it is paying you a salary, but otherwise it is not the kind-of-thing that inspires motivation - and certainly not the kind of thing to inspire loyalty.
One cannot be loyal to something impersonal and always changing; the greatest loyalty is to that which is loved and respected, which has integrity and reliability: that which lasting and strong (apparently permanent) .
One can only be strongly loyal and obedient to something that is (pretty much) the opposite of a modern, faceless, arbitrary, petty bureaucracy that most churches have become. Churches are - here, now, mostly - manned by a rotating cast of despicables: cowards, placemen, drones, incompetents, showmen and psychopaths.
Therefore, although I can certainly understand and empathise with the desire of Christian traditionalists for a simple faith characterised by obedience and loyalty; they have-found, they will and shall continue-to-find, that as Christians they Cannot Do It.
They will not be able to generate and maintain motivation to believe, obey and be loyal to the kind of organisation that the modern churches have become.
And if such people want to be or remain Christian, they will have to seek motivation that actually works. Which requires (to some significant extent), to seek the divine within themselves - by whatever means is effective.
And that means mysticism.