This question has been raised several times, and I have noticed that some people conclude that the lack of adoption is due to people not understanding Bitcoin or seeing it as a scam.
But I don't think the world still views Bitcoin as a bad thing today, though I know a lot of you thought that, but it is not the case.
I feel the reason for the low rate of adoption is just because people think it's not for them. Bitcoin has been around for over a decade, and any thought that most people would have had about it being a scam must have faded by now.
But at the same time, if you look at it, Bitcoin is a risky business; if you invest money, there are two possibilities: it will either yield profits or losses. Many people today are not fans of investment, not to mention buying assets that heavily fluctuate in price. They would choose to save money earned from hard work, and a few might invest in low-risk markets, even though inflation is still eating them up.
So it would be hard for them to consider holding Bitcoin to use it daily.
Nevertheless, the community is still growing bigger 💗, and people's interest in Bitcoin and cryptocurrency keeps growing.
Most people still see
BTC as a scam for an obvious reason: they simply don't need it. Cryptocurrencies are interesting for certain groups of people, since there are no possibilities to use it as an everyday payment method, at least now. Nearly nothing can be bought nor sold via
BTC without fiat transfers.
You forget that it wasn't the people who needed Bitcoin the most who mostly advanced the Bitcoin ecosystem. It was very likely mostly the people who needed it the least.
The whole OP title is misleading because asking whether "the world" still sees Bitcoin as a scam implies that the world in its entirety ever saw Bitcoin as a scam. That's not true. I have never seen Bitcoin as a scam. I have seen scammers using Bitcoin, but that is quite normal. I have heard there are thieves escaping with a bike, but that doesn't make the bike a scam. I believe that most people don't care, some people think it's a scam, some people hold it, some people truly embrace it and few people advance the industry.
It significantly depends on the peoples' experience as well and what their sources of information are. If they talk to someone they know, the impression could be positive unless that someone got ripped off in an alt coin ponzi scheme and says Bitcoin is to blame, which happens quite often. Or people believe it is a scam because an exchange got hacked and that is dominating the news, claiming that Bitcoin is the problem.
Many different issues that would and could have to be discussed in detail in order to derive reasonable conclusions what "the world" right now thinks of Bitcoin. An aggregated, well analyzed broader public opinion requires a lot of work.