Mods can’t tell you why people flag you. They only determine if the flag is warranted and act accordingly. If they believe it’s not worth giving a ■■■■, they might as well just do nothing.
There is strong reason to believe that you got flaggged for necroing a three month old untouched thread no one cared about anymore. That looks like a really good reason to me and it’s perfectly understandable.
I’m posting this to counter that weird vibe of self importance I’m getting from your post, which might just be a misunderstanding on my part. You should definitely think about the motivation behind the flag.
Have a good one.