The good thing was that you spotted the former accountant's errors and did what was best by moving on because anything that has to do with finance must not be taken lightly to avoid running into a financial crisis.
Tax here is not as serious as it is in other parts of the world, and it's clear why some countries are developing rapidly while some aren't.
The world has moved from just fiat to digital currency and it is a big mistake for the old firm not to get experts in that field, they might eventually lose more customers like you who are into cryptocurrency as well.
It's interesting to compare the standard of living, infrastructure and services in countries in which people don't pay tax against those who do. Many people don't like paying tax, myself included, but Australia is generally a very comfortable and affluent place because of it.
There may be other ways to do it, rather than collecting tax, but in my lifetime I can't see anything replacing tax. I work to turning to my advantage as much as I can though, hence the accounting firm change.