If the five nucleotides are so abundant in space, this may indicate that life could easily also form in other locations. But would we then really need meteorites to seed the world? After all, if they are so abundant, they would be abundant on earth too…?

I’ve heard, and may be incorrect now so please nobody repeat this as absolute science fact:

The way the earth was when it formed would have destroyed these building blocks for the most part, their arrival after the earth stopped being a molten hellscape helps get around that.

There are also plenty of tests confirming those circumstances naturally lead to nucleotides forming.

Finding them on asteroid isn't proof of panspermia but it is evidence that life is a natural and expected feature of the universe.