I know what you mean and I agree, however the workload on my vms are far more read-baser rather than write. I would say close to 95% read and just 5% write. My plex server only reads, gameservers only reads far the most time, vm's mostly reads too. Yes there's logging but this is so minimal that it has no effect. At least not to my knowledge.
As mentioned before I got 2 of these drives with 400gb capacity for cheap (actually 200 euros per drive), much cheaper than a single P3520 would have cost. It's kind of a no brainer to me, not to take the opportunity and see how it goes.
they might do super well, or they might do super bad. I can always use them for something else; cache, for my work pc, for a lab, anything really.