Funny enough, many who are still actively investing in bitcoin still think like him. Satoshi created bitcoin as an alternative to Fiat, but now, some bitcoin users are creating an unhealthy competition with fiat, tagging one "worthless" and the other better. Maybe, if there were none of such comparisons that tends to drag either bitcoin or fiat, posts like this wouldn't have come up in the first place. Critics will respect Bitcoin, likewise bitcoin users. Bitcoin is just an alternative.
Bitcoin users are not bots, the person who said so is just pained. He must have had a very painful experience with fiat and decided to dump it. Well, it is not surprising, comments like this mostly come up when bitcoin price is low. When the price is high, everyone is happy. I wish him good luck with fiat.
Personally, I don't really think that this comparison will stop anytime soon. People are fond of comparing things just to create unnecessary competition, so it's just normal to see people comparing Bitcoin and fiat based on what they value.
My only problem with this comparison is when it turns into saying one is completely worthless, while the other is the perfect one. For me each of them is useful in their own way.
And as for that Reddit user, maybe he has his own personal reasons for saying all those things, but I don't want to assume that his opinion is based on bad experience he had with fiat. I believe that both Bitcoin and fiat do have their own strength and weaknesses. So people should just go for the one that works for them without looking down or disrespecting on the other.