Conda-Forge has been providing support for Python 3.7 for 4 years now.
Increasingly projects are moving off it (particularly in the PyData community). With Python 3.11's release coming around the corner (October 3rd), conda-forge plans to drop Python 3.7 support when Python 3.11 comes out. This will lighten the load on conda-forge infrastructure and make room for the new versions the community would like to support.
More details can be found in issue conda-forge-pinning-feedstock#2623. Feedback is welcome there.