My take on magic

Raising energy through voice and vibration is certainly useful, but not the only method.

"Old english pagan" is not a language. Old English is a language, yes. If we start looking at other pagan influences maybe we think of Welsh, Gaelic, Saxon, or even the influence of Latin/French.

Languages such as Latin perhaps possess the vibration, but you can do the same thing with other languages. As I've expressed repeatedly, if you look at translations of traditional occult practices such as the Book of Abramelin, you will sometimes find those who wrote the works actually expression that spoken word be in your native tongue, so you are comfortable and it have more meaning to you. Vibration is tonal, after all, and can be used within any language through inflection and such.

One of the aspects of where another language influences things is that modern language has been created to be specific and concise. Older languages often have words or phrases that can mean many things at once. While a modern sentence means just one thing (if we're lucky), an older phrase can mean several. So metaphors, ideas, and so forth can be combined within a single sentence and expressed with just a few words... If you are fully aware of this, it brings much to what you speak.

However, this complexity can be similarly layered through imagery, prose, etc. within modern language as well.

Casually casting stones about the importance of language in magic seems to cheapen your own arguments, as much as casual dismissal might as well.