Germany at the top seems fair but I'm surprised that USA is the second on the list. I guess it differs from state to state, some are more hostile to Bitcoin and some are more friendly. In overall it has high regulation and proliferation score, well financial services is obviously at the highest point.
Türkiye in number 37, could be worse. There is no regulation yet but some bans on services. Still it has a big market and two giant trading companies, high public interest. That probably give more points. It may look different from the outside, I thought it was worse as I live there. I wouldn't call this government crypto-friendly at all though.

i'm a little surprised why Indonesia is not included in this list? even though most people here have started investing a lot in cryptocurrencies, even at the end of this year the central bank here plans to issue crypto trading regulations because more and more people are transacting using crypto.

Probably the reason why Indonesia and other countries are not included in this list is because there is no data collected on these countries.

Anyways, I am quite surprised why El Salvador is only at rank 35, right next to my country Philippines. El Salvador has already accepted bitcoin as a legal tender yet it is only ranked at 35. Philippines hasn't implemented any regulations on cryptocurrency but there is also no limit or restrictions made on it which is why most Filipino are able to use bitcoin and other cryptocurrency so freely.

In the terms of this statistics, i can agree with you that the Nigerian government stance on crypto is probably the reason why Nigeria is rank far behind in the position of 39th.
But if we should speak in terms of reality, i did tell you that Nigerian government banning crypto transactions in Nigeria was a blessing in disguise  for crypto adoption in the country, a lot of people didn't know what crypto was until the ban, the ban was indirectly a form of marketing for crypto, i am tell you this from my experience, i currently have some new crypto buddies who said, they never knew what Bitcoin or crypto was, though they have been hearing the name, they said they decided to really know what crypto was after the ban was announce, and today, they are almost pro crypto traders and investors.

I don’t know if anyone has asked the very pressing question on why isn’t El-Salvador on this list, this country has taking giant steps in seeing that Bitcoin is fast adopted by its citizens, I believe this statistic the OP is implying are those of the number of citizens actively using Crypto-currency, El-Salvador is a small country and a developing one at that so they won’t match those top countries regardless of their government stands towards crypto-curreny.

Is Netherlands a GOAT country to live in?

This country is in Top 10 on every list(even Rule of law list https://worldjusticeproject.org/sites/default/files/images/2020/top-bottom-performers_cropped.png, which is a huge plus). Legal weed too  

South Korea too, but it's good that at least two Southeast Asian country made it to the list as they are trying to become a hub at least in the region.

As for Germany, no surprise, since 2017- there have been an explosion, online merchants accepting crypto, Bitcoin ATM numbers multiplying and others. Portugal and France though, I haven't heard any news coming from them as far as being crypto friendlies, but I might be wrong.

The research obviously had some other criteria than that Bitcoin is legal tender in a country as an important feature when it comes to the status of a crypto-friendly country. Obviously, more focus is being devoted to the overall status according to crypto laws and adaptation, probably also security when it comes to investing.

There is no data for my country at all, although in any case it could be considered quite crypto-friendly considering the number of physical crypto exchanges without KYC for amounts up to even 2000 EUR per transaction, 0% tax if you sell crypto 2 years after purchase and the fact that you can buy almost anything you can imagine with Bitcoin (online).

yeah I think that's a strong reason why Indonesia is not included in the list ... but according to Gemini, Indonesia is one of the countries with the largest number of crypto adopters in the world, you can see it in this article https://jakartaglobe.id/business/indonesia-enjoys-the-highest-crypto-adoption-rate-worldwide-study