It’s a test. YT is failing the test.
Infiltration with malicious intent. Apostasy. Nominal adherence without true conversion. Unconfessed sin. The propagation of evil in the darkness to infect, oppress, and capture.
I could go on for hours. Those who are truly spiritual know that this is a war that ends only when Christ returns in judgment. The “kitchen” is especially hot right now.
Historically informed performance in classical and baroque repertoires has used lower pitches than A440 Hz for decades. Classical repertoire (Haydn, Mozart, Beethoven, etc.) is typically around A430 Hz, and Baroque repertoire (Bach, Handel, Vivaldi, etc.) around A415 Hz, using original instruments of the period or modern recreations of period forms.
You have only to compare, say, a Beethoven symphony at standard concert pitch (A440 Hz) with one at A430 to “feel” the difference, although you’ll not likely be able to do this with the same orchestra, so other factors of variability will we unavoidable.