OP is asking confirmation if in Cyprus stablecoins like USDT or USDC are tax exempt when traded for other cryptocurrencies, and that should be the case as stablecoins are cryptocurrencies; it seems that in Cyprus only crypto to fiat transactions are tax events.I can only agree with this advise. Don't be foolish and do business without to have a LTD.
Why do you recommend OP to do crypto-to-crypto transactions through a limited company if in Cyprus such transactions are not taxed?
Probably OP wants to accumulate coins doing some crypto-to-crypto transactions and converting the crypto in stablecoins when the crypto market goes down.
Maybe OP does not need cash now or in the near future and wants to wait for the next bull run to exchange crypto for fiat.
Another country in the EU where crypto-to-crypto transactions are not taxed is Poland; also Germany if you hold a coin for at least one year, even if exchanged for fiat - a tax haven for crypto investors.