You should write reviews because you like the model and the game.
It is the internet, and so, the naysayers and haters exist. If your resolve is great, you can enjoy the fruits of your labors and get gems here or there from some posters.
Blasphemous, but I used to be a champion of the Chaos Space Marine Possessed back when I still played Warhammer. Had a whole threat "The Glass Half Full" on the subject in the 40K Online Forum. It was fun, and i'd focus on the positive aspects.
I think there is nothing wrong with being questioned about your experiences more specifically, it is mainly due to us not being in your meta or in your games, that some are suspicious or just honestly curious.
I encourage you to continue noting your experiences, there are thick skulls on the internet, I myself am one too, but the reactions of random ppl on the internet is not something to really mind or get bothered over IMO. Just ignore them and focus on those that support or expand your ideas.