Spontaneity is no measure of sincerity; formality is no measure of legalism.
Much maligned is the concept of ritual. But atonement itself, the blood atonement of Christ, is a ritual, because it involves a symbolic act that God by His grace makes efficacious. To throw out traditional forms in the name of authenticity while claiming that only good intentions are needed is itself a dependence on appearance, because such an action itself assumes that only a very novel form will do for the believer to express what God puts into his spirit.
Instead of repudiating legalism, such trends as trends often result in more holier-than-thou attitudes towards those antiquated people who are too attached to tradition. Far be it from us to elevate tradition to a status it cannot enjoy, but age and lineage of use are not in themselves suspect.