Whilst you may be slightly annoyed at the advice or how it was conveyed. I would just take it to heart and use it to get better. I doubt the guy was meaning to be rude, or annoying for that matter, granted he took the effort to link you a guide. Some people may or may not appreciate the advice, but you are playing a game that orients itself around group-based activities. Again, take it as an opportunity to learn. A lot of people in this community would typically be more antagonistic about it, and sadly aggressively so. All I can say is learn to take the advice, and use that advice to avoid more aggressive encounters with people that are frankly both arrogant and nonconstructive with their feedback.