I don’t think it being hard is really the issue. Sony is a billion dollar multi-national corporation and they don’t get any benefit of the doubt whatsoever. Is it hard? Maybe it is, but maybe they should have thought of what they were going to do in the future when they were designing this. As was pointed out elsewhere, volunteers making an open source emulator are managing it so Sony not wanting to, or being unable to, isn’t an excuse.
Sadly this is probably impossible at this point. Before their whole fiasco discontinuing the desktop app there was a procedure I did where I was able to download a super old version of the desktop app and use Chrome to get into the dev interface (or something like that) of the app, then use a script someone made to export everything. Maybe if you search around you can find some way to do this with the mobile app, but I am not optimistic.