Frameworks come and go. What is trendy today will be deemed obsolete a few years later. By the time when the community no longer interested in said framework, it will feel like the rug got pulled leaving many projects stranded.
Spring: June 2003
Rails: August 2004
Django: July 2005
Symfony: October 2005
Spring is bloated as hell, last I tried it took full minutes to startup a server on default settings. This kills iteration speeds for fresh projects.
But I think the overarching point also includes versioning. For example, asp.net 1 app will still run today just fine, not so for many of these frameworks. RoR, Laravel, et al, all become a rat wheel of upgrading every 1-2 years.
It's a problem.
Contrast that with CakePHP which is still supporting CakePHP2 (I think, it's EoL is coming up soon though) over many many years. I do worry they're increasing their cadence and becoming like most other frameworks in this regard, so I may have to stop praising them for their attitude for support of older versions.