I introduce normies to RetoSwap all the time. Is not that hard once they know their way around.

With limit orders they can even get it cheaper than market rate.

Just teach them three things.

CTRL - O if they have a dispute they want to resolve early

Always use a secondary bank account or fiat service that you are willing to get force closed.

Treat RetoSwap as a hot wallet.

Couple more things. There is a SimpleX chat group on SimpleX in case they have any troubles.