Walsh was a mediocre footballer tbh.
I make no comment of the justice or otherwise of the 1990 subs selection - I was living abroad at the time so I just have no basis for a view on it.
However, in previous years I considered Walsh to be a player with a heart of a lion - the most important thing, you need those fellows - and well recognized by Cork Football supporters in those years. I recall in the second half of the '88 Munster Final when whoever was marking Liston (Liston still then a massive physical challenge) got injured - if I recall correctly it was Corrigan who was marking him - the Cork crowd were yelling for Walsh to be moved onto Liston ('cos we remembered how Walsh stood up to it before), and our wish was granted. Walsh was a small man compared to Liston, but yet able and willing to physically compete. A co-worker from abroad had gone to the match on his own just to see the sport, and the following day he came to me remarking about the confidence of the Cork supporters in Walsh despite the size difference.