That post is doubtful, but gets the benefit of the doubt imho. Yes, it is a short post in a generic manner to an old thread by a first poster.
On the contary though the answer shows some knowledge about lazarus and the topic. (ontopic, discusses high dpi in a high dpi thread), isn't stitched up of messages already in the thread, and the account has a German email address (rather than a global free emailservice) and there was not an extremely short time between registering and post.
That's multiple ham signs and only a few (but severe) spam signs.
The only template is the good old "count to ten and reply with a cool head, never in anger/irritation"