Is winning by inflicting mental damage on the enemy truly a win?

I had a game where we had Weaver as our carry, and our mid-laner told him to cut the wave because we had lost two fights in a row. By the time the enemy tried to push, they had no creeps, and backdoor protection activated. Their carry (Sniper) started spamming 'Good Game Well Played' in all chat, then disconnected for almost four minutes. I checked his Steam profile, and it said he was still in-game playing Dota 2 (he came back eventually). Anyway, we ended up winning. The question is, is winning like this honorable, guys? 🤔