You should think about your own maturity level before engaging in self-indulgent posts such as the one you just wrote.
The funny thing about the sentence I just wrote is that you could validly echo it back to me. At least the self-indulgence part. Unfortunately for you, I have been thinking about my maturity level while writing this post.
In all seriousness (and my first sentence was serious too), what we have here is that your comment's parent was written by a person who is comfortable with making light of human tragedy, something which you are uncomfortable with. I'm not sure what that has to do with maturity, and in fact I'm not sure what maturity is or why you think that attribute would be a sign of immaturity.
I'm not sure how my post is self-indulgent, to be honest.
Most people would consider black humour regarding a suicide that basically just happened as inappropriate and immature. After a certain period has elapsed, some venues will allow for such an expression. (The fact that the parent is a -50 in rating as I write this confirms this social norm.)
People who make inopportune remarks tend to be those that are either not able to properly grasp the magnitude of a situation and deal with it in a dignified and respectful way; or even worse, can't pick up on the general consensus of others as to the degree of magnitude.
How well a person can read social situations is by definition, maturity.
The funny thing about the sentence I just wrote is that you could validly echo it back to me. At least the self-indulgence part. Unfortunately for you, I have been thinking about my maturity level while writing this post.
In all seriousness (and my first sentence was serious too), what we have here is that your comment's parent was written by a person who is comfortable with making light of human tragedy, something which you are uncomfortable with. I'm not sure what that has to do with maturity, and in fact I'm not sure what maturity is or why you think that attribute would be a sign of immaturity.