It still has meaning, but the lines have become a bit blurred. They used to all have more toned down art and dry themes like Castles of Burgundy, Hansa Teutonica, Tigris & Euphrates, and Medici to name a few. Now many have better visuals and themes while still maintaining the core aspects:

• Few luck elements where the board state can be read and strategic decisions made off that information. There can still be some luck, but you have ways of mitigating that luck or that luck affects all players relatively equally like board setup.
• No "take that" elements where someone loses a card or board pieces or something directly or where all players can gang up on a single player. Instead "fights" are more over who gets to a space or gets a resource first and what they have to give up in order to achieve that.
• Typically involve some sort of "engine" or build up where the decisions you made earlier in the game influence what is more valuable to you later and you see the payoff and consequences of your earlier decisions

More contemporary bgg top 100 games that I think still fit firmly in the euro category even if they have more interesting themes:

• Beyond the Sun
• Gaia Project
• On Mars