If you read more of their posts you will see that they want to go through the game with each class in a classic style. “What people normally do in Seasons” is not relevant in this case for a couple of reasons:
- The standard procedure in starting a season is to go straight to Adventure mode with all followers and grab a weapon upgrade and go straight to Kuhl at L1. That works fine even at, say, Master difficulty. It looks like the OP is working story mode on each character so the option to mine the followers for weapons and meet ZK at L1 is not on the board - not because they are “stupid”, but because that’s not what they are looking for from the game at this point in time.
- It’s great you can fight ZK at any level whenever on season, but since they aren’t doing season, that doesn’t apply here. They were L67 when they got to ZK and that’s not a good level to be fighting a boss unless they have a weapon upgrade. They pointed out that they had plenty of legendaries from the other characters they’ve played before Barb, but they didn’t want to use them - i.e. they’re intentionally going through in a classic character-self-found-ish way that doesn’t match the pattern you are suggesting.
- Not everyone plays the game the same way. I usually don’t follow suggested procedures either because they have a dry clinical approach to min/max effective stats and they optimize out most play mechanics for the prospect of getting to an End Game state that I don’t find compelling. But, I’ve been around long enough to understand the differences and know how to interpret the standard wisdom about “how players think we should be doing things” against my own goals. This player is just starting out, doing things their own way, and doesn’t know - or care - how most people do things. Suggestions for this case need to be tailored to what they are looking to get out of the game, otherwise it is just you pushing your expectations on someone - and that’s on you, not them.