Although this tweet was mischievously supposed to arouse a suspicion of your own visual acuity, its claims hold up. Phthalo pigments (often you'll see green and blue varieties) are super intense and produce Hockney-like flat tints that go on forever. You often need zinc white instead of the typical titanium dioxide to tint them or they'd look very... very chalky and bright; therefore, very modernist. The RETVRN crowd should want, I insist, viridian green to exemplify their aesthetic obsession.
Phthalo green (phthalocyanine PG7) is not very RETVRN friendly. It is too Warholian, has a post-modernist tint strength which is you may dislike (right).
If you want Home Alone warmth, go full 19th century with PG18, chromium(III) oxide. That is, the Viridian green (left).