Warren Buffett is already a successful investor on other sectors, i don't think his additional investments input on the crypto economy is necessarily needed in my opinion . Whether Warren Buffett start investing on crypto or no, it will definitely have no influence on the crypto community, at least, he is long critics of crypto.
I think we have gone past the era of Warren Buffett ideas, after all, he never talked good about cryptocurrency in the past. I will advice that every crypto enthusiast should focus on the community, its growth and developments, and If mr Warren Buffett wants to start investing on crypto, he is welcomed.