Every "analysis" of the best starting words give you completely different words. I'm not even sure why they would say that siren or dumpy would be all that great. Just two vowels and the consonants are not all that common. Especially dumpy. Ideally, you want to get two words that get all the vowels and a lot of the Wheel of Fortune gimme letters (NSTLR) On my own, I came up with ALOUD and TRIES. Simple words. But it gets me all the vowels and all the NSTLR except for N. I've yet to fail on Wordle, and have only failed on Dordle when they throw a curveball at me with words with the same letter more than once or uncommon consecutive consonants like a GN, or FJ
Did you misunderstand the part of these three words *together* being the best three starting guesses? They *together* use all the 15 most common letters in the list of possible answers, and do so in a way that will result in (on average) more green squares than any other three words using those 15 letters.
I've quite clearly stated my methodology and the assumptions it made, so saying that "You want to start with two words" when the whole post was about finding the best triplet of words is a strange take.