What kind of access do you suggest?

Note that even before 1.11 the reflect package did not permit calling unexported methods.

The reflect package allows one to examine the types in a program. It is not intended to be a way to defeat the type system. It does not step outside the bounds of Go's types and values, it just allows one to write programs that work on types not known at compile time.

If the author of the package didn't want that method available, it does not matter what the mechanism is: it will not be available.

Maybe you don't think Java, which can provide private method calls, is very good?
Greatly increased flexibility, of course, this is only my view.

Yes, I can only speak for myself but in my opinion Java is not very good if it allows to bypass the type system like this.

Edit: When learning Go it is better not to compare too much with other programming languages because Go does many things differently, for very good reasons.

Using unsafe and linkname, it's possible to call a non-exported method for now.

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)