In 1904, the acute Anglican lay liturgist J Wickham Legg wrote about "new prayers ... deficient in grammar and rhythm, and balance, and often it must be owned even in a sense of humour. The art of writing collects, it is time to impress upon every one, is a lost art."
In 1932, K D Mackenzie wrote (Liturgy and Worship) about the Orationes Communes proposed in the abortive 1928 Prayer Book: "The Collects all seem to be modern, and vary very much in character. That of a Bishop is the best, possessing all the qualities of a good Collect. That of a Matron is of almost incredible banality, and is probably the worst which has ever been admitted to an Anglican rite."
Divertingly, that Collect for a Bishop had been borrowed by 1928 from the neo-Gallican Paris Missal!
Modern Anglican compositions are always middle-class and verbose and read like something from a DPhil thesis by a not-very-clever student, designed to show how full of ideas the writer is and to cram in as many of his brilliant apercus as possible.
In the modern Latin Catholic Church, things are not as bad as in the C of E, because the post-Conciliar virtuosi of the 1960s stuck more with ancient models (although they did most lamentably mess around with many of them). The nastiest Catholic collects are those subsequently composed in English for our local English Saints. Presumably out of Ecumenical fellow-feeling, these show all the worst horrors of Anglican compositions. Naturally, the Sarum Collects which had previously been used in the Supplementa pro dioecesibus Angliae were regarded as far too simplistic for the sophisticated 1970s.
If you possess a Collins Daily Missal, and Common Worship, and 1928, you can verify ... or falsify? ... my assertions for yourselves.