And we spend a lot of time on the internet complaining about that (nobody likes rejection).
iPadOS seems to be good enough with mouse pointer and keyboard input too now.
I don't know what too end laptops you were looking at but I suspect there are more options there than the one you chose.
iOS 13 supports local USB hard drives and network shares well enough.
You open procreate and have to share/import/export with Google each time. The automatic backup thing I use drive for doesn't seem to work. The files aren't really backed up until they're reshared with Google drive, circumventing the whole point of automatic backups as I'm working.
The file browser is a workaround that lets you drag files but the basic functionality is ruined.
When you open a file within Procreate, it should give you an option within the app to choose Google Drive or whatever other storage provider you have install and load and save files to Google Drive from within the app.
It works for Office.