He's not wrong though, the AI can become pretty predictable while humans are not. The AI follows a set of rules, where humans do not. It's a pretty big advantage.
On top of that, players get access to powerful perks such as Disciplinarian as one example. Personally I'm fine with the AI getting a helping hand in some situations where they need it, it's not like players don't have their fair share of advantages over AI.
We can react to situations but we also have patterns that we live by. I've noticed that in every game I play, even newer versions of game series I've been playing for years I always follow the same route even when I start a new campaign with the intent to do everything different I always end up falling back into old patterns, in stainless steel, I will always end up trying to turtle and put forts in choke points and giving border territory I conquer to allies to have peace of mind. Even when I start the campaign to play aggressively, it just feels unnatural to me and I get back to my turttleing, and as HRE I can start a campaign to conquer Western Europe but I always end up A turttleing and B after a while slowly creeping eastwards instead of West.
In Bannerlord as well, I start a character with the intention of playing a certain style but after a while I noticed I have fallen back into my old patterns just with slight variations: My cavalry will always be the expendable unit sent forward to give me some time to form my precious shield-wall with archers behind, if I hire cavalry at all. I will always end up trading horses to have money to start workshops even when I built a combat based raider character, after raiding 2 villages I will always evolve into the trader. I will also never really join a faction unless maybe as a mercenary and once I do permanently join a faction I will lose interest in the campaign and start a new one and I don't know why. It's just something that I always do even when I start playing specifically with joining a faction early on in mind once I do, I feel empty and restless inside and start a new campaign.
Another problem I have is that I can't handle losing certain troops, I don't understand how some people can be "meh they'll die, I'll just replace them it's no problem" I get physically angry and stressed and feel bad and responsible for my troops dying when it happens, which also makes the game harder because I tend to try to avoid battles where some of my men are likely to die (unless they are cavalry, I don't know why it's different for cavalry but it is)
we aren't very different from AI's
On top of that, players get access to powerful perks such as Disciplinarian as one example. Personally I'm fine with the AI getting a helping hand in some situations where they need it, it's not like players don't have their fair share of advantages over AI.
I've never reached enough leadership to get that perk, I know people say it's easy, you just have to form an army and leadership goes up, but for that you need to be a full faction member, which is not what I want to do. in 1.03 the Morale was better and your leadership actually went up sometimes but in 1.04 Morale is horrendous.
With everything on easiest settings I still find Bannerlord challenging because I want to be the kingdom that emerges from nowhere by conquering a castle as an independent and ignored rogue faction to everyone's surprise and then slowly grows from there but that is hard to achieve especially when you also don't like to see your men dying.
Now I know this is all due to my playstyle but that is my point: everyone has their own playstyle and AI's shouldn't cheat unless on maybe "1337 gamer dificulty"
I struggle against most AI's in most games on normal settings and usually play everything in easiest settings and experience a challenge that others might only experience on normal or hard settings