IMO, no. The open source definition says nothing about requiring outside contributions, and IMO the spirit of it in the beginning was never about that.
It was about being able to have access to, fork/modify, and redistribute the software. That's the important thing - that the software I use can be modified by me, and if I wish to do so, the license allows me to then redistribute those changes vs. proprietary software, which cannot be modified nor redistributed.
I'm not sure why the zeitgeist went from the above and turned into "all open source must be community software and engage with users and accept contributions" because that was never what it was about. It was a benefit of some projects, sure, but at the end of the day the important thing isn't whether or not the project accepts contributions but whether I have the power and license to modify something to my liking, fork it if I wash, and/or redistribute my changes.
It was about being able to have access to, fork/modify, and redistribute the software. That's the important thing - that the software I use can be modified by me, and if I wish to do so, the license allows me to then redistribute those changes vs. proprietary software, which cannot be modified nor redistributed.
I'm not sure why the zeitgeist went from the above and turned into "all open source must be community software and engage with users and accept contributions" because that was never what it was about. It was a benefit of some projects, sure, but at the end of the day the important thing isn't whether or not the project accepts contributions but whether I have the power and license to modify something to my liking, fork it if I wash, and/or redistribute my changes.