In the UK age discrimination in the workplace is now illegal and rightly so. Whilst there are clearly people who still believe that younger people are better able to adapt to new technologies or make better development team members I'm not sure there is any evidence to back this up. Some might even think that a developer with 30 years experience might be quite good.

I enjoy my job and still hope to be working as a developer well into my 60s. I've managed to adapt from the world before PCs though to SQL Server 2012 without too many problems and don't see why SQL Server 2024 (sic) should be any more difficult.

Age is just as irrelevant as gender, race or what football team you support.