I agree on the limitations.
For me the idea of buying a phone without:
1. Fingerprint reader
2. Google app support
3. FM radio is very difficult
And yet, the strategy appears to be Xperia XA range.

So, yes, it does indeed appear a safe bet.
Worse comes to the worst: i still end up with a phone with all three of the above.

If Jolla can't supply the above, then regardless of whether they fail on ZX or XA2 or xa3 makes little odds to me.