Are Hungarian pro-fertility policies failing?

Hungary-like fertility policies flatly don't work.

Hungary has dedicated major resources to this – no taxes for 3+ kids, debt forgiveness, major subsidies for homes. It's actually equivalent to ~5% of their GDP. The US military is 3.2%, so big spending.

Nothing happened. https://t.co/ICmu43cieu pic.twitter.com/VNWRctggwc

— Hunter📈🌈 (@StatisticUrban) April 29, 2024

Or is it too soon to tell?  Are we underestimating supply elasticities?  Or are they truly low?