Let's break this down. Plugging these numbers into a mortgage calculator, yes a $600,000 home with a 3% interest rate would be a payment of ~$2024/month. However, this assumes a 20% down payment, $0 property taxes, $0 insurance, $0 HOA etc.
However, an 850k house at an 8.5% interest rate with those same numbers would "only" be $5228/month. Additionally, as other commenters have pointed out, interest rates are not that high.
OP is straight up lying to you at worst, or just cherry picking numbers in a very deceiving way at best.
Not that I'm trying to argue housing is affordable. Just that people will go on the Internet and tell lies to spin a narrative and drive engagement.