They've been trying to replace Peter forever and it keeps failing to take because people are too attached to the character and his mythos. Its why One More Day is still considered one of the worst things in comic history and will explode any fan who hears about it.

Like, who was the biggest talked about character from the first Spiderverse movie? Still Peter Parker, even the older slovenly version. No one gave a shit about Miles.

They will keep pushing, and the "new hotness" will carry them for a while. But once that new shine wears off they will pull Peter back again because he sells forever while Miles or Gwen don't.