New tax law in Netherlands 2028: Paying tax despite never actually realizing any profit

I’ve been reading a lot of posts about the new tax law in the Netherlands, and it sounds absolutely ludicrous. Imagine buying one Bitcoin for, say, €60,000. It rises to €100,000 by the end of the year, but then collapses back to €60,000 at the start of the new year. You’d still end up paying around €12,000 in tax despite never actually realizing any profit.

To put it another way: Suppose you bought €100k worth of shares in 2027, but they dropped by €30k that same year. On the valuation date of 2028, your portfolio is worth €70k. During 2028, the market recovers and you make up that €30k loss. By 2029, your portfolio is back to €100k. You haven't made a net profit, but you have seen a 'capital growth' of €30k. At a tax rate of roughly 36%, you’d have to cough up over €10k while having gained nothing on your initial investment.

This sounds ridiculous to me, and i genuinely hope this doesn't get pushed through.