I contacted the team. The roadmap was removed because according to them unexpected situations can always come up during the development and in that case, it was creating false expectations.

It doesn't necessarily mean that the development of hardware wallet support or any other feature has stopped though.

As for the guy losing his money and in all honesty, It's clearly his fault. A computer with a desktop wallet = vulnerable, everyone knows that. If he wasn't willing to invest less then 100$ in a hardware wallet when he had 500k then when was he planning to do so?