Looks pretty reasonable to me, judging by the rightmost column (fatal accidents per 100,000 hours).
R22 has about twice the rate of Enstrom 28 and Bell 47. Slightly more than that when compared to Hughes 269.
Compared to FW types R22 also has a reasonably similar rate to Grumman AA1 (also an agile machine), worse than Cessna 150/152 but not wildly so.
Given what R22s are used for I don't see these figures as statistically significant.
If the fatal accident rate were an order of magnitude greater than other types in similar roles then yes I'd be looking for a problem. But not with these numbers.
Compare Enstrom 28 and Bell 47 fatal accident rate with Lu's beloved Bell 206.
In my mind that ratio makes the R22 ratio of R22 fatals to F28 and B47 look unremarkable. Therefore absolutely not justifying a witch-hunt concerning Robbies.
Of course, as with R22, the difference is down to what the types are used for, and in whose hands.
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More volts, Igor