Baconinus
Re:Parcel 2 Beta 3 – improved build performance
on Thursday May 20, 2021 @12:55PM (#27223717)
There's a roadmap section saying explicitly that they're not RC yet:
https://v2.parceljs.org/blog/beta3/#roadmap
So it was expected that they would be breaking stuff on their way. I would rather say "I'll keep an eye on Parcel until it becomes stable".