BTC (2%) and ETH (4.5%) are both inflationary right now and have never been deflationary. BTC will be inflationary until about 100 years from now. ETH is a bit more complex but in about a year when it switches from proof of work to proof of stake the inflation will drop to <1%. When EIP-1559 is implemented next year then most of the transaction fees are burned which will likely drop the inflation rate into the negatives which will turn Ethereum into a deflationary asset.