That is not true.
Even if it only pulled demand forward by weeks, it would create a strong signal of desirability, which enables surrounding projects (e.g. infrastructure) by unambiguously demonstrating interest.
Furthermore subsidy can be the difference between ability and inability, it won't do anything if there's no interest, but it can very much jumpstart or create a market where there previously was not one because the investment was too steep.
What they did was create a reward for jumping to the front of a line that you were already in. As everyone knows, the people most able to do this kind of thing are the people with the least concern over time and money.
I can go into work and put an appointment on my calendar that says I am busy. Nobody cares. I could even walk out of the office and say "I've got to go take care of something; be back in an hour". WFH makes all that even easier. If you work at a restaurant, drive a truck, etc? Not a chance. You have no flexibility at all.