Yeah but the previous paragraph says

> The bill regarding Box 3 introduces two main categories of taxation: capital growth tax and capital gains tax. The capital growth tax will apply to most assets, taxing both realised and unrealised returns, including appreciation in value and income from assets like shares, cryptocurrencies, and savings. Exchange results on bank balances in currencies other than EUR will also be taxed.

And normally unrealized capital gains on these sorts of assets aren't taxed.