Raid isn't by itself, outdated. If you have a honest use for it, it's extremely handy. Some ppl use pc's extensively, VM's multiple programs, large amounts of highly data important programs etc, so for them an off-site raid setup as backup on an hourly, daily, weekly schedule is very important. For most pc users, just having a hdd, whether integrated or preferably external, is all that's really required.
Sata/nvme has rendered hdd in raid0, useless. They are still faster as a solo drive. Raid1, a simple external hdd/ssd as a backup works just the same, without the issues inherent with drivers and bios in a windows platform. Raid5 is for 3 drives, raid6 is 4 drives, so at that point raid10 is the better option anyway, raid0 speed, raid1 security. But thats a lot of drives to take the place of 1 external hdd/ssd used as a scheduled backup and then unplugged.