The meaning of agnosticism is very relevant to this discussion. "Webster's" isn't a trademark, anyone can write a dictionary and add Webster's in its name. Ask your local lexicographer.
Encyclopedia Britannica, excellent choice! This source is scholarly. Here's the link to the article that you have referenced from:
https://www.britannica.com/topic/agnosticism.
I encourage you to read the whole article. It's a good source. There are sections that explain different types of agnosticism including atheistic agnosticism and Christian agnosticism.
That's not how language works, but I will try to be patient with you. Here's an example: someone that is a Lutheran is not required to follow everything that Martin Luther believed in order to be a Lutheran. The term, "Lutheran", is
descriptive of a school of thought and not
prescriptive. The meaning of one who is Lutheran changes over time and between congregations (with some things fundamentally in common). A person that coins a term or pioneers a term is not the sole stakeholder of that term.
Even if you believe that a pioneer of a term should be the sole stakeholder, you might be interested to hear that according to the article you referenced, Huxley's position included the idea of Christian agnosticism:
"Huxley himself allowed for the possibility of an agnosticism that was in these senses religious—even Christian—as opposed to atheist." - Encyclopedia Britannica,
https://www.britannica.com/topic/agnosticism#ref38258
I'm going to assume you were having a bad day. I'm going to assume picking fights is your defence mechanism when someone challenges your assumptions. Don't be like that. I'm a believer in the idea that cooler heads prevail. Let's help each other understand the other.
"Reprove not a scorner, lest he hate thee: rebuke a wise man, and he will love thee." - Proverbs 9:8
Immature people call themselves lots of names without knowing any better. "Agnostic", "atheist", etc... labels are superficial. The heart and soul and mind are what matter. A person can call themselves "atheist" without actually being an atheist at heart. A person can call themselves Christian without actually having their heart in Christ. It's complicated and I don't understand why anyone would think it is not complicated. Why should we judge someone else by their heart which we cannot see?
"Let no man beguile you of your reward in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind," - Colossian 2:18
Peace be with you.