"The plural of anecdote is not data."

The methodology of collecting anecdotes matters immensely. Merely collecting anecdotes based on whoever manages to comment in a random thread opens your collection process up to massive selection bias. In fact we even have a name for this process: a filter bubble. Every filter bubble in existence is the result of people assuming that not only is the population of their bubble representative of the average person (it's not), but also that people on either side of an issue will be equally likely to offer their anecdote (they're not).

Without rigorous collection methodology, anecdotes do not sum to data.

(Note that this comment says nothing about the broader topic of omicron severity; I don't have data, listen to people who do.)