Completely not true. We welcome criticism and feedback, we even have a topic with 800 messages called "What don't you like about V / what would you like to be changed?"
Out of curiosity, I checked the discussion in which you referred to by link. The person in question is not a developer or contributor, but appears to be passionate about the discussion. I don't think it's bad to have a difference of opinion, even among good friends. In addition, we can't always be right on every issue, and sometimes we have to "agree, to disagree".
The other person in that discussion on V's GitHub even apologized for appearing harsh, seems to have begged you to come back, and gave you a compliment.
Also deleting your part of the discussion also robs other readers from evaluating the full merits of your side. There will usually be people on your side of the discussion as well or see your point of view. I think you will find that overall and from what I've seen, people in the V community can be appreciative and welcoming, but like anywhere its a mix of different personalities and characters.
https://github.com/vlang/v/discussions/7610
Wishing V to die and making false accusations is not "constructive criticism".
There will be a blog post next week.