Trying to keep this relevant to the O.P. .The amazing difference between being a footballer and a football supporter is huge. A successful footballer needs. personal attitude, confidence, a feeling of being wanted by the club and supporters. These are some of the unseen elements that can make or break a footballer. However I noted many great footballers still make lousy pundits, yet many lousy footballers become great managers.
So in my opinion provided we keep football hooligans, football supporters, & players who don't bother training from debating, the goalposts can stay in place for a great debate with some very knowledgable "football" comments. However it also needs to be remembered not many coaches train the opposing teams players, that's saved for" INTERNATIONAL" managers.