Appreciate that mate but it certainly wasn't ignored yesterday on Twitter. Was shared around by pretty much all the top writers. Was hugely embarrassing.
Write a rebuttal lad. At the end of the day, you will always get criticism when commenting on sports, due to the partisan nature of the fan base. If you eloquently explain where he is either incorrect or, as you have stated on here, looking down his nose at you, then this would be the best reaction, worse case, is you get into a "feud", which is always good for a read and increases profile and readership.
At the end of the day, most journalist put their comments down and submit them for people to "review". you'll get some good, but some bad, and due to the Partisan nature of sport, you'll mostly get bad.
Through the whole gamut of journalists, it still surprises me (Especially with the more high profile) get upset with criticism, as this is the back bone basically what they are doing to others, so I'm surprised he has the gall to attack peer. I agree personal attacks are not on, and the body of work should be judged, not the person who produces it, but some times the lines become blurred and sometimes its relevant.
At the end of the day, like I mentioned above, challenge him on his comments (In a respectful way, even if he want to act a ****), else you'll regret it later on.