I really doubt this level of interaction (that too, regularly enough to be considered a part of the pipeline) would exist between non-NATO and NATO militaries.
Also weird is the 2.5 years of training remark. A friend I knew who served said it doesn't work like that and the training is repetitive and phased with deployments in between. Some may go to to a hot zone after 6 months of training, or some after an year but it would be highly unlikely to go through 3 years of training and then start deploying (something I've read implied on SSBCrack and other unreliable stuff).
Maybe he IS a real operator and his wording is all incoherent but what he's written doesn't seem reliable.
Plus, he's from MARCOS and he writes MARCOS everytime with an apostrophe?
Maybe I'm nitpicking but a member of a SOF wouldn't write his own unit's name wrongly.
As for SQT, they don't allow SEALs who have passed the BUD/S pipeline to go through it till they've obtained their security clearance but they're allowing Indians to go through it?
Idk how that'd work.
Sounds super fishy.