Hello there Paulo, I am RCG17 and I like to play racing games for fun.
So, there's my introduction; now for my response to your comment. I wouldn't say it hurts to do an introduction, but the thing is that on the internet. It's not typically expected on forums to do that in my experience and introductions for new users before making a post isn't typically expected on this site. On the other parts of the site with Gran Turismo or Forza Motorsport as examples; I haven't seen this being treated as a big deal on the count it's expected for most users to not bother with introductions.
Honestly, I found it to be a bit shocking there's an extra expectation on this forum thread to be pointing out the supposed rudeness of not introducing yourself as a new member. Once again, I really don't see an issue with someone replying with a simple question as long as they're not typing in all-caps or saying things that violate the AUP.
Hi Perico, I am just a Random Car Guy that enjoys racing games for fun including sims.
Now with my introduction out of the way, I can say that simply replying with a hello first isn't too much to ask for in joining a community. I also can say it could be rude if someone came up to me in public with a question, but that also depends on their approach. With how the other guy just simply asked "Do you have links to the mods?" That's honestly pretty harmless, especially compared to the replies I have gotten elsewhere.
Another thing to point out is that we're on an internet forum where introductions honestly don't feel exactly necessary, it doesn't feel as rude to me when someone randomly replies to me with a question here or on other websites regarding a mod or whatever else. At least in the way the other guy spoke. If said user was simply asking this question in a private message in a blunt manner such as "HEY, HOW DID YOU GET MODS?!" Then you would have a point.