It’s fine to be non-rigorous as long as you’re not a jerk and treat your own conclusions on relatively little data as preliminary. Sometimes it’s good to have some information with relatively large error bars and be willing to update quickly rather than ignore information because the error bars are large. From the article it doesn’t become apparent that the author wouldn’t update her views quickly as new information comes in (eg by talking to someone). So yes the observations in the post are not scientific, but there’s nothing preventing them from being the starting point of rational reasoning and behaviour.