Uh yeah. It’s called Blockchain analysis. There are coins designed to make that harder (XMR Monero for example). But the reason why bitcoin will definitely crash is because quantum supremacy will arrive in ten years or so, and while some cryptos are quantum resistant, bitcoin is not and never will be. Maybe it could be forked. But either way, btc will go to zero within ten years (check the ten year forecast), so get out of bitcoin while you can.