What a great rant.
No one has ever blamed the latest outbreak on returning travellers but on infected illegal migrant workers somehow passing it on to the “entertainment” workers centred on Soi Thonglor and thus into the general population. An “ex” of mine, now a hairdresser, became infected because one of his customers was a prostitute in that area. Your use of the pejorative “contaminated” betrays your innate Puritanism.
Is your argument that “Thailand had it coming” based on its porous land borders or its sex industry (bearing in mind you’re a sex tourist yourself)?