in dota the tactics is to do with the execution of abilities, often times in coordination with other agents in execution of their abilities to get combo effects while adapting to the situation as it unravels.
What's your MMR, out of curiosity?
I do think OpenAI five derived some of their advantage from seamless ability usage, and inhuman coordination in lane, but it also did some novel things strategically, that challenged some of the established tenets of high level play (e.g. they had a lot of mobility on the map, back when that was considered very inefficient).