First, some context: I am in no way a Bitcoin maximalist — I think there's some value outside of Bitcoin, but ultimately BTC is my 'main' crypto holding and every profit I make with altcoins has always been exchanged back into BTC.
In crypto bull markets, the common opinion is that in a full-blown bull market, pretty much everything goes up unison. This is based on crypto's general performance back in the last bull market of 2017.
The thing is, people seem to expect the same thing in this cycle. Do I think it will be the same whereas pretty much everything goes up? I don't think so. Capital and attention are too spread out and too diluted.
Compared to 2017 — as if we didn't have so many coins/tokens already back then, we have far more coins and tokens now; we're talking huge multiples more coins/tokens. Money will be too spread out this cycle that price pumps will likely be heavily suppressed.
I and a lot of people here frequently say that BTC is the better pick for the masses(which has always been true), but regardless, I'm usually only like 10% BTC overall most of the time because I like risk and I have been historically successful with picking altcoins. But this cycle? I have far fewer altcoin holdings and am more concentrated on BTC as the r/r has gotten worse with altcoins, and I think a lot of people will be disappointed — regardless if we generally continue to go up or not.
Will there still be altcoins that will achieve huge multiples? There will always be such altcoins.
Will I be right? Maybe, maybe not. Time will tell.
Yes it's actually true that their is always an alt coin or meme coin that is going to do 100x or even 1000x for you, but how are you going to know the right pick? Bro, to tell you the truth, the higher rate at which various coins are in the market today, it's very clear that most of this developer just came for the money, they actually don't give a f**k of what's happening to their coin, they are more interested in the money, and during this upcoming bull run, just as the op has rightfully said, not every coin will rise, some will even deep further, because, once the money of investors are spread across all asset, their is a very high possibilities that not every coin that investors will invest into, and they will definitely shrink in value during the bull run and even more, after the bull season.
So it's very important to focus mainly on Bitcoin because it's actually the real deal, because once you invest into Bitcoin, you are very much certain that when the bull season comes, you are definitely going to reap what you sow earlier, and you will definitely be rewarded, but for those people that loves to gamble, my advice to you all is that, if you must gamble, gamble like only 10% or any amount you can afford to lose on any shit coin or alt coin, so that even though it doesn't goes your way, you actually wouldn't be brothered by the loss you may have.