I'm starting to have my suspicions that they may be taking so long because they're pivoting to console, like Genshin and Zenless Zone Zero, but that requires a rework of how certain content is accessed without GPS.
I thought the GPS thing was intended to be completely optional so I imagine it would just be a matter of just....omitting it out a hypothetical console version?
The last closed beta of the game had issues, but none that saw that could potentially stunt development for an extended period of time. And I think it's way past the stage of them going "oh wait, this mobile game ISN'T actually a very good/profitable idea!"
Regardless, the radio silence is very bizzare. Watch it be something miniscule like "oh we just needed more time to polish the game up". But that's just wishful thinking.