At one point (2020) they did intend for the difficulty to be similar to Hollow Knight:

> So Team Cherry is not out to make a more difficult sequel, then: they're hoping for it to be a "comparable" test of skill to Hollow Knight, Pellen says, while Gibson explains that starting with the clean slate of an entirely new kingdom with its own lore and new characters is another way in which Silksong is designed to be "a perfect jumping-on point for new players. We're trying to be really, really mindful that we want this to be a game that new people can come into, and experience as their first Hollow Knight game — that it sits alongside the original game, and the difficulty also sits alongside the game in that way."

https://www.reddit.com/r/metroidvania/comments/oebdg6/the_ho...