At the beginning of a fiat standard, before inflation really sets in, you would only need to save for 2-5 years based on the figures I provided, and you could afford a house.

In a Bitcoin standard, there would be ~no inflation and the same would be true too.

The idea that it takes 30 years of labour to buy a house in the first place is very specifically a fiat created problem. A manufactured issue that has become so normalized that almost everyone with a house has a mortgage of that length, because that's the only way to afford it. This only became the norm after the FED started raising rates and inflating the currency.