We can plausibly claim that Bitcoin would be far better off now if not for the huge pile of shitcoins that turned out outright scams at the end of the day. People wouldn't have lost their money in these schemes, and they wouldn't lose it if they invested it in Bitcoin instead. Simple and straightforward logic, right?
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.
In the same vein it is natural to assume that the death of the altcoin world would eventually do only good to Bitcoin in the long run as people won't be losing money anymore. So what d'ya think?
This is what a "bitcoin maximalist" would love to see. Without the competition brought by altcoins, it's possible that those who are in charge of bitcoin blockchain development wouldn't care about improving scalability and lessening fees since they have the monopoly. That wouldn't be good either.