It sounds like you're arguing that high valuation compared to fundamentals means buyers expect gains from future buyers paying more sounds like a Ponzi, but it isn't, it is speculation.
The comparison doesn't make sense. Some surface features of speculative markets can look Ponzi-like, but the underlying mechanics are very different.
A Ponzi-scheme returns to earlier participants directly from money contributed by later participants, with no real underlying business generating value. In a Ponzi-scheme, there is no real product (or it is irrelevant), the operator controls payouts, and investors are promised steady or guaranteed returns. None of that applies to Tesla stock.
Ponzi-schemes hide losses, smooth returns, collapse suddenly. Tesla stock is volatile, has had large drawdowns, and public reflects bad news, margin compression, demand shifts. Volatility is a sign of a market, not a Ponzi.