I don't even know why anyone would have to compare ordinary meme with Bitcoin, although I don't have anything against such idea because I believe we are learning every day. Bitcoin is the number one cryptocurrency and it has the largest market capitalization which is the reason why if Bitcoin falls, it will affects every other tokens in the market. There is great gain in Bitcoin and we need to ahead to invest more so that we can always make good profits from the market. There are people that have made huge profits from the market since day and we should be ready to take such bold steps but it might to hard for people that does not have much funds.
The answer is simple, it's a lack of knowledge that makes them say such things or even think about it because someone with enough knowledge wouldn't need schooling about the fact that Bitcoin isn't comparable with meme coins or even normal altcoins because it was the first cryptocurrency and it's fame and popularity cannot be matched by others.
Meme coins have become a large trend these days because of their nature of providing quick profit sometimes, and this is the reason why new investors entering the market think that meme coins and Bitcoin are from the same category which isn't the reality.
Such people learn these things after they get hit on the head, once they lose some money, they realize what's gold and what's not.
When reading the title, I was quite surprised to see someone wanting to compare bitcoin and memecoin. But it seems like OP is a newbie and needs to learn many things, so we don't need to be too strict with him or newbies in the market. But ignorance and hasty investment will cause severe consequences for them. Assuming they still think bitcoin and memecoin are the same, and invest in meme projects, they will pay a very high price for their ignorance.
But there is no better lesson or experience than letting them experience it for themselves because sometimes they will ignore our advice, but when they lose money, they realize what's gold and what's not as you said.