I think the difference is that bitcoin IS the product, and far more people can at least tell you what bitcoin is for (even of they don't agree that it fulfills that purpose), and it's far easier to demonstrate that usage outside the cryptic casino (e.g. capital flight, wealth preservation in the global south, etc...). Ethereum is supposed to be a platform of products, except hardly anyone knows that, and so far, it's largely been used to speed run the last century of securities fraud.