It is just cargo cult. The value of these old Toyota and Honda makes no sense. I was looking to buy an old Toyota because of the hype on internet, but there are not a lot of them being in Europe, and 70% of them had an engine issue (threads holding head gasket were missing, common issue on aluminium engine).

At one point, I pondered buying a Toyota previa with this head gasket issue for 3K and planed to repair it myself. Fortunately I got my sense back and bought a Renault Scenic with no issue at all, 2K and I managed to have also the timing belt replaced. Yes, internet thinks that because it is a French car, it will crumble. Well internet, so far it had no issue and its head gasket is intact.