Did a little research.
The hiring frequency picked up 2024-10-16. It averages to ~5-6 reviews a month before that, but ~18 reviews a month after that date.
Sunday and Friday reviews are especially higher than other days pre 2024-10, but more evenly distributed after 2024-10.
Dates do line up for traveling providers.
Most reviews posted between 14:00 and 01:00. A spike for reviews posted 08:00 to 11:00, presumably overnight sessions.
In general, patterns do not look like the typical fake accounts. Not saying they are absolutely true, just inconclusive.