Sceptical is the wrong word, that's for sure. It would be like calling yourself asexual rather than admitting you were homosexual, or calling yourself an atheist rather than admitting you had converted to a different religion.
There are very few genuine sceptics out there and they tend not to repost tweets or cut and paste articles. They might occasionally reference a paper and ask questions, but if they were to formulate an opinion it would usually be open ended and inconclusive.
Your common garden variety antivaxxer is just someone who doesn't realise they have been radicalised by their algorithms or social circles.
