I wish I had found these games back then.
I reckon you are about right. Although many of those rakeback pros are rather exploitable, due to the fact that they must be massively multi-tabling. I don't understand how a few of the guys at the very tops of the leader-boards haven't gone broke.
Worst thing about my twister account is that I accidentally changed my nickname; I should be KamawoopCo, but now I am stuck as Flux2018.
A long story there, involving Coral's support staff being exceptionally bad when it comes to poker issues, even by the general standards of terrible support that seem to be the industry norm.