Since the wordlist was only 1626 would this not weaken anything generated by the early version of Elecrum 2011.
Something I have been looking at for some time now but never really seen it brought up in any of the topics around wordlists.
I don't think it matters as long as the as much as possible random entropy that is encoded or represented by the mnemonic words isn't bad, i.e. generated in a weak manner that would allow some sort of successful attack.
We don't have time, money or energy on this planet to break good random 128 bits of a wallet's initial entropy by brute-forcing it (there's no other way than that). And for a 256bit entropy it's not going to be easier, for sure.
In the end it doesn't really matter how you represent this random entropy by any wordlist as long as you can recreate the entropy from your mnemonic words in an unambigous way. What matters is standardisation if you want interoperability between different wallets.
You explained it well with arguments but people still can't understand. They follow very primitive logic that more is better, they can't understand that the whole Thesaurus and a tiny BIP wordlist, both of them are equally safe for generating 12 or 24 words seed phrase. To be frank, no one ever had a problem with it, no one's wallet has ever been hacked by bruteforcing seed phrases and I don't really understand why are people looking for solutions for a problem that doesn't exist.
Maybe people don't understand, maybe people are lazy to dig into the documentation of how BIP39 actually works. I don't know what exactly the problem is. You can read and try to understand BIP39 at various places where it's explained. For me a nice spot is here:
https://learnmeabitcoin.com/technical/mnemonic, it's visual, some explanatory code for code nerds and lots of details and links.
Who doesn't understand that?
What people have to understand is the importance of good randomness of the initial entropy that's represented by some well defined procedure and standardized
for interoperability! wordlist. The size of the wordlist doesn't make the security. Fewer words in the wordlist means you need more of the words to represent your chunk of entropy and vice versa.