India is banning bitcoin for a decade now.
USA and UK regulated cryptos.
And DeFi has nothing to do with the bitcoin regulations, DeFi hype ended so you are not seeing much news about it now.
When a hype for around something ends, that doesn't mean the thing itself also ended. There are dozens of platforms driving development of DeFi applications forward. It hasn't stopped and rest assured it won't stop anytime soon. There is too much potential to be exploited there. Crypto adoption is still low, the tech still too complicated, cross chain transactions and communication still to cumbersome. When the frontends of all these applications become more user friendly and the applications themselves more established, we will see a lot of them going mainstream with the next generations to come. DeFi is anything but dead.