I will not completely subscribe to the idea of getting rid of all altcoins because there are few that are worth holding like SOL, ETH and a few others. Their profit potential is high, maybe even higher than bitcoin but that does not mean one should go all in on them. What I will always recommend is anywhere close to 80% bitcoin and 20% altcoin so that one will minimize risk and maximize profits. This is how I plan to proceed, others might have better formular for allocation.
You think alts has more potential than in BTC, therefore you need to allocate more on them than in BTC. I think that was true and at the same time false. True because alts value are still smaller than in BTC, so they may still not struggle on reaching more heights but false because there are talks that BTC can still reach a very high price like 1 million dollars or more in the future.
For maximizing profits, all-in works better here, while if we want to still profit but at the same time managing the risk, then this is where diversification can take place. Allocation can depend on the capital. If we have more, then we can adjust and make BTC 70 percent instead or lower.