Didn't listen to the podcast so not sure how it exactly went but I feel that any other MOBA Pat's gonna play he's gonna compare it to HotS now so map variety is gonna be a major complaint. To be fair it is one of the things I find it to be a strong point in that game as the map and objective variety does give each game a different feel.
Also I know Pat has some thick skin but I feel his patience would wear thin if he continued to play DotA. Its not impenetrable but unlike League and HotS with there f2p rotation system, DotA is super overwhelming as they give you all 111 heroes from the get go so you don't have time to learn specific champs as there always gonna be a different lineup each time. That combined with the large map, the shops and the level of micro you need for CSing and denying definitely makes DotA the hardest one to get into which I honestly feel Pat would not be willing to learn nor try to understand.
Also I know Pat has some thick skin but I feel his patience would wear thin if he continued to play DotA. Its not impenetrable but unlike League and HotS with there f2p rotation system, DotA is super overwhelming as they give you all 111 heroes from the get go so you don't have time to learn specific champs as there always gonna be a different lineup each time. That combined with the large map, the shops and the level of micro you need for CSing and denying definitely makes DotA the hardest one to get into which I honestly feel Pat would not be willing to learn nor try to understand.