A portfolio that will find difficulty in growing or making good profits is one filled with bunch of shit coins/tokens that are on the pump and dump scheme. It is a right thing to maintain a healthy coin holdings in one's portfolio to avoid a continuous decline it value.
Bitcoin has attained it's Trust over the internet and crypto space, and lots of the top altcoins on CMC ranking.
Meme coins that will be profitable to their investors or traders on their early listing are those who entered the trade as early birds, and they will secure tons of profits, having traded with the uptrend flow.
Indeed, a portfolio with many meme coins or shitcoins does not have to be maintained for the long term. What is meant is that when we invest in shit coins or meme coins, they are short-term assets, not to be used as long-term assets in our portfolio. Because, the price movement will usually stop after reaching ATH and will drop very drastically after that. When we do not take advantage of this moment to immediately take profits, then in the long run, our assets will only become trash and have no value anymore. And that only makes our portfolio look like many assets but less value
If you want for a long term investment, don't invest with meme tokens because it is not being made for long term. Normally, meme tokens has no utilities and their price depends on the hype or the community. We all know that hype will vanish in time so it's good for long term. If you want a long term investment, choose the top altcoins in the CMC including Bitcoin because you will not regret holding them for a long time.
The top notch coins on the CMC ranking are coins that will stand and hold on, not being controlled by quick pump and dump situations, but because they have survived the test of time, and have shown to be worthy of investment, by showing improvement and development of their projects, creating ideas that can solve one problem of the other. Meme coins that are on the top list of crypto ranking does not still have what it takes, because they are controlled by hype. They have no utility in the community.
If we look closely, all of these meme coins are for quick profit, and after a short period, it experiences dump, investors are interested in what will give them rest of mind, where they have little to no thinking about Lossing their entire capital because of hype or pump/dump.