I know that a similar question exists but it does not gives answer to my question.

I'm a beginner to nativescript and don't know much about it. While searching on Google about nativescript, I've found that nativescript is single threaded and is slower than react-native in terms of performance in this article.

there they talk about virtual-dom but for sake of this question we can exclude it and focus on single threading.

(NativeScript V7 was released on 31st August 2020, and the article that I referred was written in 2021)

But later I found this article (V7 docs) by NativeScript, where it says NativeScript can do multi-threading operations.

I know that JavaScript at it's core is single threaded language. And so NativeScript would be.

So my questions are as follow: Q1) Why nativescript is considered single-threaded, even though it has multi-threading capablities? Q2) If Question 1's answer is "NativeScript is multi-threaded", then why no main-stream corporate is using it? is it due to frameworks maturity or anything else? Q3) Should I use NativeScript for complex application like property rentals (similar to AirBnB or OYO)?

I already know Angular so it will be easy for to start with NativeScript. And I also have a decent experience with Angular.