What he probably refers to is exactly what he said, the enemies are a little too strong at the beginning of the chapter. The only issue I really have is that most enemies always get the first action, even with the agility tactic. But without using the right covenant(s) the enemies can be harder, in this case this already applies to the first enemy (the lizards).
Because there were those kobolds I decided to try Rithris to be able to tempt them before they escape and it also made it much easier against the lizards with her lightning skill. Before that I tried some other covenants and there wasn't much gain as I lost too much hp over time and the lizard meat was not worth the effort.
Yes, the story boss difficulty slider helps a lot, almost laughable easy with their damage output, but the same doesn't apply to normal enemies which actually end up to be harder than the boss, the boss is just a prolonged fight. Not everyone will pay that much attention to the covenants and to use exactly the right ones, or at least any good ones, so I believe there should be some possibility to make it at least a little easier for those who do not.
The difficulty slider is already a good start. Either make a separate one that applies to everyone but story bosses or make a single one which applies to everything. And like I said, the main issue I have is the speed of the enemy, or maybe rather how slow you are, which leads to the enemy often getting the first action, especially annoying when it happens against the first enemy of the chapter.