An annoying guy told me that Monero is already quantum resistant and that Bitcoin has no possibility of quantum resistance via soft fork, which could force the community to start everything from scratch again.

I have my doubts about this, all the experts who talk about Bitcoin say that it would be possible to save the blockchain from quantum computing.

Among private cryptocurrencies, I think ZCash and Dash are much better than Monero because they have scheduled scarcity and Dash is even more scarce than Bitcoin.

Not to mention that the doors are closing to trading with Monero, few exchanges offer Monero and the number tends to fall. Soon people will only be able to trade p2p, maybe this will increase the value of the currency or maybe it will be their death sentence.