Not that any such whataboutism course would be applicable, as the cycle of contemporary [going back some 100 years] Thai politics, by it's very instinctive nature, is and has been soundly corrupt. Dependent largely on varying degrees in which one's perspective is based on.
No doubt that the Shinawatra clan were on the take and succumbed to the corrupted tasked at hand, yet one doesn't have to be a scholar [or even a decent researcher] to comprehend long before their time and long after, the deep criminal element of everything Thai politics was/is rampant and accepted as part and parcel of oligarchical rule - all of which made the Shinawatras seem angelic in comparison.
To diverse degrees they're all associated with the same club.....and any newcomers are deemed to follow or forced to join.