Austria - Yes, pretty much everything is taxed. Also trades between different cryptocurrencies.
It all counts towards your income tax, so you are quite fast at 50%.
50% is quite too high. Why not try to just hold it all in crypto. Visit a country with lower fees and cash out then go back home to Austria then with that money.
This is exactly why countries such as China are trying to ban exchanging crypto to fiat. For example, if you are living in a high tax country such as Germany and Sweden, then you can catch a flight to St Kitts (where there is no income tax) and get your coins converted to fiat. You can come back to Germany and show the income as earned from abroad.