It might be incrementing fast in steps rounded to 10th 
- and eMMC’s are not to mistaken for (good) SSD’s. They often not (much) better than sd cards and don’t have any cache (e.g. SLC) to successful mitigate write amplification. 
Long story short: I used to run HaOS on a little intel stick PC on the internal eMMC which is now dead 
It looks like it was a very poor choice for the home assistant green to don’t have a replaceable or even upgradable(?) storage. Any one knows if the green can be booted from USB - the sd card is already limited to recovery only… 