I specifically bought one 4 years ago to have something that could withstand existing in an industrial environment (dust, oil, hard surfaces) and for €150 it still lasts today.
I've been using this brand for some time now and the phones are well made. The option to go strong into the rugged segment payed off. But this is way over the top.
GrapheneOS is specifically designed for hardware with certain hardware security features, as in the lead developer will not support anything that doesn't have these. Leading it to only really being available for Pixels (but some niche company is supposed to be getting an official grapheneos version soom i believe)