altcoins need to make uses case first.
even BTC doesn't make effort on it
Of what use is the link you posted? There is no correlation between the link and the statements you have made.
Then talking of altcoins having usecase: if any altcoin needs to stay afloat in this era that we are in, such must have not just a usecase, but a unique one, because that is what will enable its easy adoption.
As for bitcoin, at the initial stage, there was no definite usecase for it, but you can see a lot of usecases around it now. It is present enjoying the benefit of being the pioneer coin in the crypto space.