I really don’t think things are as bad as you paint them out to be. I see new users join the #algofam on twitter daily. I, and many others, have joined the Algorand community to participate in governance and explore the ecosystem having started my blockchain journey on Eth. By that measure, I’d say the Foundation is doing their job. I’ll not say that every move has been flawless, however that is a tough standard.
As for “acknowledging their failure and studying up on Solana” to paraphrase. What point will that serve other than to drive people away? Things are getting better or they aren’t as to adoption. As for Solana’s “tactics” for mass adoption, wasn’t it two people working in coordination to artificially inflate Solana’s TVL that is credited for its fast adoption?