There's a lot of extreme Bitcoin hate on this site, but BTC is helping a ton of people right now, as evidenced by the rapidly increasing demand and money flowing into Bitcoin investment.
Not making a judgement either way on BTC's success but what you've highlighted there isn't evidence. An artificially inflated market based on speculation would show the exact same signs.
I don't think this is the case, it feels more like people here are no longer as easily charmed by the whole buzzword catalogue surrounding bitcoin. This switch from everyone starting a new cryptocurrency and "X, but on blockchain" dominating the discourse towards a more critical view probably just feels more extreme than it really is.
There really is no alternative for where to park your money in 2021 unless you want to buy real-estate or stocks both of which come with their own massive set of problems.