Sorry for not replying to you earlier.
When I say BTC is a shitcoin, I mean that it's slow and expensive to use. It fails as a currency. I'm also not very optimistic that the BTC blockchain has the necessary properties for a satisfying consensus to be reached.
STEEM is already so much better than BTC. The only thing BTC has that STEEM doesn't is the price, and BTC's price has nothing to do with its properties as an actual currency. It's just an investment that people have made in order to one day dump it for FIAT.
That's my view on it.