This is a strange reply.
Tipping in Europe is not expected and it isn’t done to ensure people get paid for their labour (which is just odd).
However, tips are welcomed and not seen as an insult. It is a bonus, something additional to their wage. If you feel the service deserves a tip then give one, but don’t feel you have to.
As a European I tip occasionally, when the service warrants it. However if I don’t tip, I don’t feel bad about it because I know the person is still being paid an appropriate wage and are not reliant on my tip.