Say the word “though” in your head. Then add a “t” to it. Would you really argue that “though” and “thought” are pronounced the same simply because they’re the same spelling save for a final “t”?
The easiest “rule” is that the creator can decide how to pronounce and spell it lol. Taking English rules that don’t even apply 100% of the time to its own words and trying to hold made-up words to the same standards just sounds silly to me haha