It's bad compared to other NVME SSDs. Compared to hard drives though?
Where are you pulling that from?
P2 is a budget SSD and it's not something I would put in my recommended list, but it's still an NVME SSD so it's not going to become useless after a year as the other person claimed, it has nothing to do with DRAM either. The flash itself is slow and the downgraded version only has a 24GB cache so it slows down to snail speed after that, but how often you do actually move that many files?
Not to mention it also makes no sense to recommend SATA SSDs to someone looking at NVME drives, just recommend a better NVME drive.