Same behavior with my 520's. Of course this is something the software is doing, but it's possible it was a conscious decision by the programmers, or a mistake too. Non-Intel SSDs have their raw SMART data displayed in hexadecimal too.
A few of the SMART values were never displayed in a format that made sense to the the user, like power on hours count. The power cycle and unsafe shutdown counts are simple to translate to decimal and seem to be reasonable values, in the OP they are 274 and 269 respectively in decimal.
Raw data in most cases must be translated into a user friendly value, as I imagine the total LBAs read and written values are. If so, they really aren't raw data values, are they? Not that it matters to me, SMART data reporting has always been a non-standardized mess. 0x0 still means zero in decimal, and the Windows calculator in Programmer mode can easily change hex values to decimal.
Here too, Intel SSD 520, 60GB, brand new, first PC connect, shows bad Drive Health:
Tested on 2 of these drives - same results.
This same Drive Health warning was in 3.1.2 too for 520 60GB. And realocated sector count is zero.
Drive health of the other Intel SSD shown there (X25-M 80GB) is full Good after few years, 7TB writes and 4 realocated sector count.
Toolbox 3.1.2 showed "SMART detils" values ok (realocated sector count: 4) but 3.1.5 in HEX (realocated sector count: 0x4).