We would never know if bitcoin would still reach $20K and then drop back to $3K without those shitcoins. I don't think they were relevant enough to affect bitcoin and drag the price down to almost 90%. We can plausibly claim also that even if they invested in btc alone, they would have still lost.
He may never know for sure but as the past movement of Bitcoin I am pretty sure that it will still go in a new all-time high maybe the time is not really right for now but I am pretty sure that it still will,
Along with the drama of halving it may increase in value and may also end up a failed, but that all-time high will still come, and by many lost with some investors is the weak hands that are selling first.