Not the person you replied to, but this isn't constructive. Correctly pointing out hypocrisy/double standards is very pertinent to the discussion, and shouldn't be dismissed as "whataboutism". Making assumptions about someone who disagrees with you -- in this case, the assumption that he/she is a Kremlin sympathiser -- is irrelevant at best and insulting at worst.
Not the person you replied to, but this isn't constructive. Correctly pointing out hypocrisy/double standards is very pertinent to the discussion, and shouldn't be dismissed as "whataboutism". Making assumptions about someone who disagrees with you -- in this case, the assumption that he/she is a Kremlin sympathiser -- is irrelevant at best and insulting at worst.