There was this thread recently which might be relevant to your post. It seems PVE puts high load on disk, and this could deplete TBW quickly, especially on consumer-SSD.
There are a few things though you could do, i.e. use "noatime" for filesystem, avoid writing small files (use big buffer for logs), fire up trim regularly from cron, keep enough free space on SSD, don't use consumer-SSD (or at least not those with TLC), etc.