You already need to be a little careful. I can't remember the specific search where I ran into it... but if you follow some user accounts recommending a specific brand you'll find that they have very shallow post histories.
This happens on Amazon reviews all the time as well.
What I end up doing is trying to find a post that isn't all-in on any specific solution... but lists pros and cons of multiple options, because it seems less likely that a content advertiser will post anything negative (or positive about a competitor).
There's been a steady increase in astroturfing and blogspam over the years on reddit to subs like /r/frugalmalefashion where small indie shops are able to pump and dumb objectively low quality wares. The mod team does the best they can but they can only do so much as the effort to surface good content costs way more then the effort to artificially boost bad content.
In a few years Reddit will be just like the generic google searches for everything but the most heroicly moderated or obscurely small subreddits.
This happens on Amazon reviews all the time as well.
What I end up doing is trying to find a post that isn't all-in on any specific solution... but lists pros and cons of multiple options, because it seems less likely that a content advertiser will post anything negative (or positive about a competitor).