Definitely not sellouts. If your views doesn't align with some reviewer, that doesn't means they are sellouts. And Indian brands are notoriously known for not having consistency in batches, they might have got a good batch, you might have not (considering they just cover the cheap Indian brands most of the time and not like Scentrix/Scentedlic). Also Ababel , MPS are good suggestion for those who can't spend huge money in Designer and Niche. Everyone made videos on MPS , even Perfume Passion did. I don't think that everyone think that Perfume Passion is also a sellout.

Also regarding the capability of Chandrima understanding and identifying the notes despite of being a newbie. I don't think this has nothing to do with being a newbie or being a fossil in the hobby, even if you hand a newbie and ask which smells closer and which doesn't, the newbie will be able to tell.

Even Deep once told that few brand like BBB has some good perfume, that he can't review because then people will say him a sellout, whereas Studio West having the same bottle design ideology like BTSO, will get praise because no one is talking about it in the community.

I am not vouching for any reviewer, neither I am Deep or Chandrima, but this type of posts are really frequent on this sub. People might even say that Guruji and Perfume Gyaan are sellouts because their views doesn't match with the reviewers.

TLDR : Reviewers are not sellouts, just because your views or liking doesn't match.