Let’s keep this discussion focused on the investments, not the personal side of things, fasttimes.
Looks - TeslaModel3 isn’t wrong in most of his statements, he’s just taking a high risk approach that has paid off recently, which you might call gambling. You’re advocating for a lower risk, more diversified approach. Either can be more suitable to an individual investor, depending on their risk tolerance, goals, market views, etc. for many, especially those with admittedly little knowledge of or interest in following the market, index funds are a fine choice to produce roughly an average return but they won’t outperform either. That’s the tradeoff.
Big tech stocks are high beta to market conditions - most of the time if you knew the broad market would go up the next year, you’d make more money in QQQ (Nasdaq 100) than you would in SPY (S&P500). See the last 10 year chart for how this played out, with the former up 100% more than the latter. That’s not to say they’re better overall, since I tend to think they would also lose a lot more when the broad market falls, but that hasn’t happened recently. his point that IF you could judge the near term market conditions would continue to be favorable (“up”), these stocks would outperform is almost certainly true; however, it’s not useful as an investing approach unless you think you can predict the near term future market. I tend to view such claims with skepticism, but in any event, if you could do that, your optimal strategy would be something like medium term ATM calls or puts and you’d trounce even these good tech performers.