Yes that is correct I believe. Most countries distinguish between "hobby investors" and "professional traders". If your main activity and source of income is related to trading, you will most likely be considered professional trader and will need to pay (more) tax on your profits. Same goes with Slovenia which doesn't tax crypto profits for individuals, but professional traders are taxed up to 50% (progressive income tax).Por tugal was a good solution apart of a low cost of living, weather, security and other reasons for living there, but it seems that going deeper, if you are doing crypto daytrades and apart of this, trading is your unique source of income, autorities can be consider you professional trader, even doing that individually and with your own capital and tax. This happens to in other supossed crypto friendly countries as Malta and others.
My solution is likely to be to incorporate in Bulgaria for my business (not trading) so that I can get Bulgarian residentship and become tax resident. I don't mind paying 10% taxes on profit, and what's even better is Bulgaria ONLY tax you on crypto-fiat transactions. So you can trade crypto-crypto, margin trading, and with stablecoins, without being taxed. I had this confirmed over Skype with a reputable law firm that has helped several hundreds of foreigners becoming Bulgarian tax residents, so I do trust them.Apart this possible choice of Georgia -maybe someone can confirm this- or the 10% flat rate in Bulgaria. I have not seen any other option. Belarus is another choice and no doubt there you will not have any problem with crypto taxes until 2023, but get the TRP (Temporary Residence Permit) is really difficult as happens with Malaysia.
I had no idea Belgium did not tax on crypto. Do they tax differently for professional traders, ie. if your main activity and source of income is from trading?Belgium - a no-brainer for EU citizens.
Get a ~700 eur/quarter (2.8k a year) medical insurance from there, and register with Brussels city council as "economically self-sufficient" permanent resident.
No capital gains tax on crypto sales. Feel free to leave after you've cashed in. I give no guarantees on what your home country will think of this.