Not a lack of 75-100 m2 (3 bedrooms) under €600,000 in walking distance from the most famous tourist attractions, I know as I looked.

Smaller 2 bedrooms can be bought in the center of Amsterdam for €350,000 with a €35,000 deposit (10%).

How is that not viable for a tech worker?

It's sort of viable, but you'd have to spend 2-3 years living in overpriced temporary sublets while trying to save up to that deposit, and still it just supports the original comment which was that you could only afford 2 bedrooms and even that is a push.

To get one of those 600k apartments you'd have to flip your first apartment for the bigger downpayment, and that's gonna take another 2 years.

We are talking about living right in the centre of Amsterdam. No one is stopping you from buying something with a much lower deposit at a cycling distance from the city centre or a much smaller deposit with a 30 minutes public transport commute for 2 years so you can then afford to live in one of the most desirable areas of a main city with a sizeable tourist industry.

That’s 2 years saving to then live where you want and then an extra 2 years to live where you want in the apartment that you want which is oversized for a single person.

Why do you need a 3 bed as a single person and what’s your ideal scenario? Do you want to be able to afford a house without a deposit, is that it?

That 2 bedroom apartment costs way more than my 5 bedroom house that is ~420 m2. Housing prices in some places are crazy.

Evidently.

That 2 bedroom apartment is in one of the most desirable areas of the most desirable city in the country. Location matters.