Given the current Bitcoin sentiment, many are becoming more negative towards this currency, but those who have sufficient fiat or Naira reserves will generally consider this period as an ideal time.
It is very good for people to be negative towards crypto. You can see the altcoins have fallen when bitcoin was above $100,000, they are only falling more this time. Crypto is like a scam or gambling, only few coins like bitcoin are the ones that can be used as investment.
I would say stop comparing Bitcoin to altcoins because you might know that the BTC market alone acts as a catalyst for all coins. Recently, a large amount of dollars has been liquidated from the BTC market due to political unrest so we can see that now Bitcoin price is at 70k level but all other alt coins have completely collapsed, as ETH price also went below 2k dollar again. But at this stage you are right that very few coins can be used as investment except Bitcoin.
I will not advise anyone to buy bitcoin with all there money, they can buy more gradually as time passes by. Bitcoin is now above $70000, but I do not think bitcoin is going above $75000. We are still in the bear market.
Instead of all the money, you make regular purchases with Naira. Even during this market collapse, I bought aggressively with my Naira reserves, in fact looking at this Bitcoin sentiment, it seems like we are still in a bear market.