As an elder Marine Veteran NCO (who served 13 months in-country in I Corps, RVN), I'll give you the benefit (probably more than your attitude so far deserves) of the doubt.
Snipers (of whom I am not one) are a generally reticent group. Terms like 'best sniper' have little meaning to them; essentially any experienced Sniper who is still fit to continue the task would qualify. Such terms are largely meaningless to professionals, they do the job to their own best satisfaction, and take serious pains to ensure they remain capable of doing it again. Titles and the opinions of others are not a meaningful part of their self assessment process.
There are publicized international championship
meets sponsored across the world, and essentially, they determine who's best
on that particular day at running a course which pit skills and conditioning against adverse conditions. I'm not sure what that proves, but I expect the process earns some respect and recognition, and I'm equally sure that a large segment of the Sniper profession are unimpressed.
In this context, the term 'best Sniper' probably has no concrete meaning. In any other context, it probably means even less.
So I'll give you an answer that's probably as true as any other, and one that will set your mind into the correct frame to continue toward your boot camp 'experience'.
Of course the US Marine Scout Sniper is the very best in both the known and unknown universe.
...and now, about your attitude. Plainly, it sucks. Marines are pleased to assist other Marines, and in fact, any other who takes the time to consider their question and the viewpoints of those whom they may ask.
That pleasure stops short of dealing with know-it-all wannabees who think it is their prerogative to tell us what we should be and how we should do what we do. When you earn the title 'Marine' (it's not a description, it's a title...), you'll understand
our attitude.
Until then I strongly suggest a demeanor based on the core values of reticence and humility. Try telling a DI off like you did those above, and you'll soon learn that their kind and nurturing sides got left back in their home quarters that day (and any other day).
Your agenda has literally
nothing to do with
theirs.
Many of us Marines feel likewise, as you've already experienced.
FYI, the gentleman who owns/runs this website has had the honor of being both a US Marine Scout Sniper, and an Army Sniper. I can only imagine what thoughts are running through his mind regarding your participation on his website.
That is all for now...
Greg