Yes . This lazy writer sometimes stuck, and at crash of OS at people that disappeared much.
Here after all the main problem that at FW=ON writes pages on a disk in the certain order. And at FW=OFF them writes on OS disk, in the own order.
For example, in basis the new page is arranged. On it the data is written, it is anchored to table pages. Then the page is marked in PIP as used.
That is, about 3 pages are written to basis in the certain order. If during any intermediate moment to push the button reset at FW=ON damages to basis will not be (for example, orphan pages are not considered as damage).
And here if FW=OFF, can happen such - in OS cache there left 3 pages - PP, DP, PIP. The first registered changed PIP, then PP. And here pushed reset. The result - pages is not present, and it is marked as used.
Basically, not catastrophe, but can be and is much worse.
However, FW=ON all the same is not a warranty. For example, the cache of the disk controler can have the representations about in what order what to write.
And at failures SSD generally helps nothing. Here recently in repair informed about basis in 25 in which there were only 7 % of the helpful information, remaining was or it is spoiled.
Unfortunately, I do not know, was there raid from ssd, or not, and generally that happened.