Most of these probably aren't being submitted by the actual soldiers. The majority of the new reviews seem to be in English and even the ones in Ukranian could have been posted by anyone
Considering they were able to keep the whole incursion into russia a secret for 2 days, even though the low level soldiers were all allowed to keep their phones, i think they are somewhat disciplined regarding opsec like this.
I'm sure between drone surveillance, satellite surveillance, spotter planes, and citizen reports, Russia knows EXACTLY where they are, it just doesn't acttually have anyone to stop them.