The same write patterns would be completely different if so much was one single byte was written to one drive initially and not the other. See butterfly effect.
I have has linux servers with raid1 OS disks (swap and tmp included) for years in an enterprise space and never seen it. I have seen failures sure but don't think I have even seen a single server have more than one SSD failure. I really don't think this is a concern now.
I would always use same type of disks unless it was a home server and software raid and I just happened to have 2 different ones rather than buy new.
I have has linux servers with raid1 OS disks (swap and tmp included) for years in an enterprise space and never seen it. I have seen failures sure but don't think I have even seen a single server have more than one SSD failure. I really don't think this is a concern now.
I would always use same type of disks unless it was a home server and software raid and I just happened to have 2 different ones rather than buy new.