Even if they spend their entire income on taxable goods and services — which is very unlikely, as rent/mortgage doesn't have VAT — that would mean 21% of the remaining amount were taxed, so 55-50%.
https://www.oecd.org/tax/tax-policy/taxing-wages-netherlands...
I also wasn't making the case for the average worker. Was assuming higher earners then the norm since that's the whole vibe of the article