In the past, the 1v1 Bot actually shifted the mid meta successfully. It was using Mangos and Salves much more frequently than a human would, which allowed it to fight for harass and farm with no downtime and snowball into a lane win (the AI prioritized Mangos and Salves above not only other consumables but items like Wraith Bands, Boots, etc.).

This strategy is optimal for 1v1 SF mid, yet it doesn’t account for the fact that after the laning stage you need actual items to win the game. Because of this, mid players integrate this into their gameplay, yet didn’t take it to such an extreme. Salves and Mangos are great tools to pressure your lane opponent and win the lane, so nowadays they are used more commonly than Tangoes and Clarities mid, yet over-doing to the point it hurts your item progression isn’t necessary. I.e. you can still learn from the bot without imitating it.

Open AI 5 is a bit different than the 1v1 bot. As explained in more detail in this brilliant Medium post linked above, the bots receive short-term rewards that help them work toward their long-term goal (winning). You can check out the reward list here. Understanding those rewards is pretty important to put the bot’s decision making into context and not to draw wrong conclusions.