You are absolutely right that most of New Projects use Ethereum Network in particular DEFIs but not all, Binance, Polkadot, Tron ,EOS and many others have their own Network for creating smart contracts. No doubt Ethereum community is very strong but the issues of Ethereum Network are not being resolved despite launching of Ethereum 0.2 which is very disappointing for its community.
Not Ethereum 0.2 but Ethereum 2.0, the current Ethereum network is not as stable as it used to be, but if we compare Binance, Polkadot, Tron, EOS, and many others, Ethereum is still stronger in terms of usage, meaning that Ethereum cannot be beaten by the others.